physics Crossword Puzzles

12 Clues: Motion resistance • Axle-to-axle distance • Area around wheel well • Data recorder (2 words) • Study of human injury physics • Shows vehicle travel distance • Drivable area adjacent a road • Tire deposit on a road (2 words) • Coverage against a possible loss • White line, road boundary (2 words) • Case of inconsistent vehicle damage • Pavement scar made during a collision

12 Clues: Study of Life • Study of Earth • Study of Natural events • A guess about the future • Study of Matter and Energy • The variable that is tested • The variable that is measured • Using your senses to get info • A variable that remains the same • Information gathered through observation • Something that could have multiple values • A testable prediction that answers a question

12 Clues: SHS school color • SHS Vice Principal • SHS Physics teacher • Our student section • # of Periods in a day • SHS Pre-Calculus teacher • Check your grades on this • _____ Eagles (SHS pep band) • Sidney Public Schools mascot • Name of the SHS school paper • Extra perk of being a Sidney student (no school on ___) • Wing where you'll find Culinary, Personal Finance, ELA 9

19 Clues: The country was Einstein born. • The name of Einstein's younger sister • The astronomer that found that the universe is expanding. • A medical student who served as Einstein's informal tutor. • Einstein's first steady position at the Swiss patent office. • 1905 is often described as Einstein's "___________ ________." • ...

11 Clues: study of theater • study of computers • science of numbers • study of past events • teaching of musical arts • education teaching of sports • study of artistic expression • teaching of earth and life sciences • science of energy, force, electricity • study of chemical properties of substances, reactions... • study of the earth's surface: countries, mountains, oceans...

5 Clues: force between charges • study of nature and natural phenomena • physics knowledge accumulated till 1900 • the science deals with non-living things • the force between two magnet or magnet placed in magnetic field

5 Clues: force between charges • it deals with non-living things • study of nature and natural phenomena • physics knowledge accumulated till 1900 • the force between two magnet or magnet placed in magnetic field

8 Clues: First love • you are..... • Aai kay mhante? • you make me...... • Special Day today! • Frequently used word? • What do I love calling you? • you are.... But not really required

8 Clues: my last name • my first name • 3rd hour class • favorite student • my table partner • My brothers name • what color is the sky • a big playground that involves water

19 Clues: Bohr/1922 Nobel for Atomic Structure • Mistral/ First Latina to win a Nobel Prize • Rontgen/ 1909 Nobel for Discovery of X-Rays • Einstein/1921 Nobel For Discovery of Photoelectric Effect • Dylan/ Famous singer who won the 2016 Nobel for literature • J. Altar/2020 Nobel for the discovery of the Hepatitis C Virus • ...

14 Clues: Namaste • Gregg and Hillari • The goal is a bullseye • Berk, Hayley, and Molly • Special Friday activity • This place is a slam dunk • A hot spot with a cool mist • Where you must wear a harness • Where you find the queen and king • Result of colors swirled together • Adventurers meet here every morning • Division for campers entering 3-6th grade • ...

14 Clues: to have • to view • causing death • to find something • a piece of writing • To look at something • a collection of ideas • to give an opposite view • a science related subject • to make someone interested • having little experience or wisdom • w group of millions of stars and planets • a group of people that has reached an advanced level • ...

14 Clues: What doctors practice • Firm, not easily moved • Flight path of a rocket • Like a difficult puzzle • Promise to stick with it • Strong belief without proof • Tiny discrete unit in physics • Freedom from external control • Average, neither good nor bad • Sense that wine critics rely on • Awareness of one’s own existence • Science of elements and reactions • ...

14 Clues: a greek god • a continent • lung disease • a tie in tennis • drugs or medicine • currency in europe • a long lasting fight • nerve or nervous system • an intense feeling of joy • a treatment therapy or drug • lung treatment and diagnosis job • frequently experiencing negative emotions • physics and technology of mechanical properties of gas • ...

12 Clues: / not skilled • / not developed • / virtual presence • / act of emigrating • / pay or remuneration • / camera used for web services • / you can't access the web without it • / Techniques that use living organisms • / the application of scientific advances • / physics, maths,...are examples of this word • drain / a two-word title in this book (unit 10) • ...

12 Clues: / not skilled • / not developed • / virtual presence • / act of emigrating • / pay or remuneration • / camera used for web services • / you can't access the web without it • / Techniques that use living organisms • / the application of scientific advances • / physics, maths,...are examples of this word • drain / a two-word title in this book (unit 10) • ...

12 Clues: doing sums • a study about places • what Grace teaches you • education doing sports • subjects you must study • the language you use daily • things happened in the past • playing instruments and singing • subjects you can choose to study • including chemistry, biology, and physics • about production, resources, and good and services • ...

12 Clues: under North • Up from South • Wish and believe • Increase Confidence • also known as supply • People who are from Vietnam • where rolling thunder occurred • Synonym to Hostility and Violence • Synonyms for Demoralize and Dishearten • Improve, Found in The Rocket League Arena • Powers, this word is common in the physics • used for expressing motion or direction toward a point

17 Clues: Hometown • Favorite Color • Favorite sport • Summers spent here • Plan for retirement • Daily outfit accessory • Where did he go to college? • What subject does he teach? • How many years did he teach? • First part of morning routine • Classroom is located on this floor • What school did he student teach at? • Former chair of this school activity • What was his first job after college? • ...

17 Clues: assemble • word puzzle • construction • you read this • where is blank? • what is youtube for • a book is meant to be? • CICE is a kind of blank? • flour is commonly used in? • mohawk college is a blank? • english is a type of what? • blank is a word geussing game • requires wood and blueprints for blank • Nintendo, sony, microsoft all produces • ...

17 Clues: Unit of Charge • Current x time = • Measured in Amps • Slows down current • The unit for energy • One Joule per second • Current x Resistance = • The unit for Resistance • The rate of energy transfer • A circuit with one loop/path • The Physics name for a battery • Equipment that measures voltage • Equipment that measures current • A circuit with multiple loops/paths • ...

17 Clues: information • a logical prediction • to notice or percieve • consistency in results • study of living things • potential source of harm • study of matter and energy • referring to characteristics • a factor that can be changed • referring to numbers or values • devices which use continuous data • final statement summarising findings • study of the earth and its processes • ...

17 Clues: vegan • Know it all • a z in England • sneaker perfume • Max's shoe size • talking on paper • ignorance is bliss • what matters to energy • another name for blade • is a joke made by a jock • The whisky-rockets in skyrockets • What Gram says when she is surprised • the meaner your face the worse it is • The past from the female point of view • A person who chases after windblown hats • ...

17 Clues: a friend • in a loud voice • to learn by heart • to do or say again • a talk between people • to find something new • the way to say a word • something kept hidden • the rules of a language • the look on someone’s face • a short record or reminder • calm and not easily annoyed • the study of matter and energy • a regular way something happens • a book for students to study from • ...

17 Clues: a married man • study of the past • a table for students • hair above the mouth • you wear them to see better • study of animals and plants • singing, playing instruments • eraser (for pencil mistakes) • son of your brother or sister • a book with words and meanings • hair on the face (chin, cheeks) • your father’s or mother’s mother • your mother’s or father’s sister • ...

10 Clues: To be Careful • To be foolish • Something special • To show something off • Something very special • A subject within physics • consequences of (for instance) medicin • – to unlock something/get permession to • – something you get for winning a competition • - Objects that can be used with something specific

10 Clues: bzzzzzz • "wheres class" • where santa lives • me when i see tunwa • can be computational • NOT where santa lives • bakugou is ______ed to deku • my defiency as a brown girl • Like Y/n - not like other girls • nick as an element on the periodic table

10 Clues: A moment in time • The final frontier • Endless or limitless • Balls of burning gas • Travels at 300,000 km/s • Space with intense gravity • Orbits a star like the sun • Fourth planet from the sun • Physics of very small things • Earth's journey around the sun

10 Clues: urgent or commanding • calm, peaceful, tranquil • gloomily; moody; withdrawn • scientist specializing in physics • to take in and incorporate, absorb • unintentionally, without meaning to • wise, judicious, insightful, knowing • irresistible impulse, being compelled • warlike, aggressively hostile, bellicose • falling into ruin or decay through age or neglect

6 Clues: füüsika • muusika • eesti keel • matemaatika • inglise keel • loodusõpetus

6 Clues: food 1 • food 2 • subject • computer • greetings • programming

6 Clues: химия • физика • биология • география • ғалым,наука • тарих,история

7 Clues: the movement of an object • a physical quantity that is completely described by its magnitude • a fundamental truth that is used as the foundation for a system of beliefs • study of the laws of nature and how everything in the universe is connected • branch of physics that concerns the motion of objects in a frame of reference • ...

7 Clues: Cascade • Wood cutter • Wire control • First ________ • Computer-Numerical-Control • Chemistry, Physics, etc... • There is no robotics without this.

13 Clues: high respect; great esteem • a style or category of art, music, or literature • a box in which a dead body is buried or cremated • related to the mental and emotional state of a person • formal idea or set of ideas that is intended to explain something • sufficiently great or important to be worthy of attention; noteworthy • ...

10 Clues: Two or more waves that meet at a point in space. • Physical quantity that measures the energy transported by a wave. • Type of wave that does not need a medium to propagate like light. • Change of direction of a wave when passing from one medium to another. • And what types could be most adequately described by sensory-based models. • ...

14 Clues: Eye doctor • Four pecks? • Type of apples? • Center of an apple • Surrounded by water • "Apple of my ______" • farm of fruiting trees • Pirate thinks you're right? • "As American as apple _____" • "I ___ with my little eye..." • What an apple is in the spring • Rocky Balboa had "The Eye of the ________" • Lore has that a falling apple helped him with Physics • ...

14 Clues: My birth month • My favorite color • My favorite dessert • The borough I live in • Stuy is on ________ St • How many siblings I have • The Stuyvesant ____tator • What floor is the pool on? • Name of the deli next to Stuy • What floor is the library on? • Last name of my favorite singer • The show I’ve been binging lately • A popular freshman AP Bio teacher • ...

14 Clues: City we live in • our new last name • Month we got Percy • Month we got engaged • High school we went to • Acronym for Ben’s work • Our favorite board game • Type of airplane Ben has • Ben wants to build a ______ • Acronym for Samantha’s work • Stone on Samantha’s wedding band • Samantha wants to build a ______ • class we had together Senior Year • A game the Mlinac family always plays

10 Clues: slowing down • change in position • change in velocity • SI unit of distance • vertical line on a graph • study of motion and energy • horizontal line on a graph • visual representation of data • measure of distance over time • measure of how far an object traveled

10 Clues: the study of earth • the study of matter • the study of forces • the study of plants • the study of healing • the study of weather • the study of animals • the study of living things • study of objects beyond earth • the study of numbers and patterns

10 Clues: living ting • simphysicsweight • study of the earth • anything that has mass • particular kind of matter • study of living organisms • study of the composition of matter • study of bodily structure of organisms • sciences study of the natural universe • study of the interaction of matter and energy

10 Clues: a doctor • to cut apart • rotating winds • to release something • person who fixes things • a system of working parts • to withdraw from a party or country • transportation vehicle with 3 wheels • natural or manmade compounds or substances • study of how matter works, moves, and interacts

17 Clues: Malala's 1st exam • Subject of nightmare • Amjad Malala's tutor • Reason teacher hysterical • studies Malala's 2nd exam • Teacher requests what for prayer • locks Malala does this nightly • Something else Malala does nightly • picture Disturbs Malala's father • al-kursi Common prayer for Malala • protection Outcome for five prayers • ...

17 Clues: Focus of NACA • Agency before NASA • Massive star explosion • First Russian satellite • First NASA administrator • Shape of Milky Way Galaxy • Kepler-186f and 1 Pegasi b • Wavelength detected by Chandra • Jupiter moon that may have water • First U.S. Satellite: ********-1 • Great Observatory launched in 1990 • Home of world’s largest wind tunnel • Home of NASA’s Johnson Space Center • ...

12 Clues: Champion of________ • a very talented_________ • famous cricketeer classmate • first bike colour was________ • most rebellious act in college • did not like practicing________ • purposely got a zero in________ • First office partner, Popat________ • first picnic with thatha was in _____ • first house in Chennai above_______lab • your brother picked you up for this study tour • ...

12 Clues: life • matter • forces • physical world • forces, matter • human behavior • earth, weather, stars • Describes why something works • Latin: to make study of/apply science practically • Describes how something works usually with a formula or equation • Describing the properties of a substance with regard to specific quantities • ...

12 Clues: news • hurting • a sick person • to become healthy • a science subject • opposite of friend • to end a phone call • a subject or a class • a person who protects someone or something • a place where people study after high school • girlfriend and boyfriend or wife and husband • a thing that makes noise to remind you of something

12 Clues: Sir Isaac • 9.81 m/s^2 • measured in ohms • your favorite subject • displacement over time • 100 of them in a meter • the name of your teacher • 6.67x10^-11 and 8.99x10^9 • your teacher plays this instrument • the galaxies with the youngest stars • every action has an equal but opposite one • a classroom device used to measure distance

12 Clues: warm • fake • easier, not strict • a mix of two things • odd, strange, uncommon • the good things of a job • learning studying at school • the final day to submit a task • the amount of work you have to do • physics, chemistry, PE, English, Math • studying and learning on the internet • a line where people wait for something

12 Clues: educated guess • Elements, atoms • glass for eye protection • The study of living things • These substances produce heat • The study of light, sound etc • an explanation of observations • a safety symbol shown by a skull • Handle these substances with care • These substances can easily catch fire • These substances can cause chemical burns • ...

9 Clues: Primary • You may pass • Not at the edges • Working all together • Inspired by the muses • The largest type of cetacean • The study of sound in physics • Organised, uniform, steady walking • Important to both visual and performing artists

10 Clues: Two or more waves that meet at a point in space. • Physical quantity that measures the energy transported by a wave. • Type of wave that does not need a medium to propagate like light. • Change of direction of a wave when passing from one medium to another. • And what types could be most adequately described by sensory-based models. • ...

8 Clues: symbol • fed up • immortal • mental pain • disappointed • had a surprise meeting • very small and suffocating • One who knows about the branch of physics dealing with stars planets etc.

10 Clues: 20th element • fastest land mammal • SI unit of pressure • staple food of India • smallest prime number • capital of west bengal • second colour in VIBGYOR • instrument used to measure temperature • branch of physics that deals with heat • gas that makes up 70% of our atmosphere

6 Clues: is equals to speed x time • surface has higher friction • is the rate of change of velocity • is the distance measured in straight line • quantities are physical quantities that have magnitude only • bearings are used to reduce friction between moving parts of machines

6 Clues: distance/time • speed remaining the same • speed specifying direction • total force acting on an object • force that resists the sliding or rolling of one solid object over another. • rate at which velocity changes with time, in terms of both speed and direction

9 Clues: Wave • speed • Effect • Spectrum • frequency • radiation • interference • interference • (compressional) wave

6 Clues: what is the charge of electrons? • what is the unit energy is measured in? • what is the main heat transfer in fluids? • what is a space with no particles called? • what are materials with low thermal conductivity called? • which sort of materials have a high thermal conductivity?

6 Clues: A push or pull exerted on an object • the product of an objects mass and velocity • The force that pulls objects toward each other • The distance an object travels per unit of time • all the individual forces acting on it are added together • Stored energy that results from the position or shape of an object

6 Clues: The change in position • Change in an objects position • Any push or pull on an object • The rate of the speed changing • The speed of an object with direction • The magnitude of the object moving without direction

12 Clues: no response • no response • no response • no response • Teaches physics • Taught at NCS before • Is an avid crocheter • Traveled to 40 countries • Studied abroad in Ireland • Can ride a motorcycle and horse • Ran 1st half marathon in November • Taught every grade but Kindergarten

12 Clues: are those in which the last electron enters the outermost s-orbital. • a region of an atom in which electrons of the same energy are likely to be found • In chemistry, a group is a column of elements in the periodic table of the chemical elements. • ...

12 Clues: alloy of Cu,Zn,Su • first synthetic element • highest ionization potential • first element of 4n+2 series • halogen that doesn't form Oxyacid • element having lowest melting point • discovered electromagnetic induction • element showing scarlet flame colour • element that causes minamata disease • lanthanide that doesn't occur in nature • ...

12 Clues: computers • outer space • Living things • the environment • what happened before us • The Earth and its people • Why we look like our ancestors • Our thoughts, feelings, and emotions • matter, elements and how they interact • How to keep our bodies and minds healthy • How things move and how the universe behaves • Fossils, dinosaurs, and ancient forms of life

13 Clues: What is 2+2? • What is mass? • Comment allez-vous? • What is a semi-quaver? • Compare these two novels • How are mountains formed? • Paint a picture of a tree • How do trees use sunlight? • Why was Napoleon so popular? • Shall we play football today? • What makes for a happy couple? • What happens to demand if prices go up? • What happens if we burn magnesium in air?

7 Clues: hole • data • disks • matter • physics • processes • of particles accretion,

8 Clues: Major • Middle name • Home country • Favorite sport • Favorite shoe color • Favorite music genre • Marvel superhero whom I'm a big fan of • Instrument I enjoy playing pop or jazz

8 Clues: Using numbers • Studying the past • Drawing and painting • Learning about countries • Physics, biology and chemistry • Singing and playing instruments • Learning about plants and animals • running, jumping, exercise, sports

14 Clues: a ship or boat. • to begin or start. • a malfunction or breakdown. • an area region of a spectrum. • a person who builds or designs. • a financial you receive from a sponsor. • something coming in contact with something else. • something that moves that takes skill or care to do so. • involving ellipsis,especially to be very hard to understand. • ...

14 Clues: In which city was Dorothy Vaughan born in 1910? • In which city was Ronald McNair born on October 21, 1950? • Dorothy Vaughan's life is detailed in which book and movie? • Where did Ronald McNair earn his doctoral degree in physics in 1976? • The primary goal of the STS-51L mission was to launch which satellite? • ...

6 Clues: When the speed of an object remains the same - it does not increase or decrease. • Force between two surfaces that are sliding, or trying to slide, across each other. • Force of attraction that exists between any two masses, any two bodies, any two particles. • ...

7 Clues: weight of something • motion of human body • how dense something is • change speed or direction • basic unit of chemical element • impetus gained of moving object • a subtomatioc particle with negative charge

6 Clues: The unit of force is • rate of change of velocity • Force of ...... always opposes motion of objects. • Galileo Galilei and Isaac Newton developed an entirely different approach to understand motion. • The natural tendency of objects to resist a change in their state of rest or of uniform motion is called • ...

6 Clues: An intense spark of electricity that flashes in the sky • ______ scale is used to measure the magnitude of earthquake. • Movement of _______ can cause flow of current through an electrolyte • The study of celestial objects and associated phenomenon is called ______ • The photosensitive cells present in eyes which are sensitive to bright light and colours. • ...

6 Clues: A nice feeling. • A 8*8 boardgame. • A famous physicist. • A city where I live. • A vrey clever animal. • A world champion of chess.

6 Clues: causes rotation • consumption bill • flow of electrons • movement of electrons • passing through a surface • electricity and magnetism

6 Clues: how many cycles pass a point per second • How fast a wave travels through a medium • distance between two corresponding points on a wave • The change in frequency or wavelength due to motion of source • A wave that travels through the earth usually from an earthquake • Perceived highness or lowness of a sound, depends on the frequency

6 Clues: Closest O Type star • The explosion that causes GRBS • Gamma rays have the highest _____ • Gamma rays have the shortest _____ • A dense core that can be left after a supernova • The absence of light that can be left after a supernova

6 Clues: hggy • haafa • jfabhb • njafhj • afhihih • aufahdgss

10 Clues: a push or a pull acting on an object. • Change in velocity of an object per unit time. • is speed of object moving in a specified direction • force of ------------ always opposes motion of objects • GALILEI father of observational astronomy" and father of modern physics • FORCES If the resultant of applied forces is equal to zero, it is called • ...

10 Clues: A push or a pull acting on an object • Change in velocity of an object per unit time • speed of object moving in a specified direction • force of ------------ always opposes motion of objects • GALILEI father of observational astronomy" and father of modern physics • FORCES If the resultant of applied forces is equal to zero, it is called • ...

10 Clues: To be Careful • To be foolish • Something special • To show something off • Something very special • A subject within physics • consequences of (for instance) medicin • – to unlock something/get permession to • – something you get for winning a competition • - Objects that can be used with something specific

10 Clues: Study of life • Study of plants • Study of animals • Study of the Earth • Study of heavenly bodies • Study of genes and heredity • Study of properties of matter • Study of composition of matter • Study of weather and the atmosphere • Study of organisms and their environment

10 Clues: an uprising • noisy uproar • unlimited view • a branch of physics • aggressive or warlike • a system of exercises • a cure for all problems • design and construction of aircraft • expose and mix with air and other gases • a wire or rod used in sending and receiving

10 Clues: very big • feel, perceive • normal, average • the opposite of smart • comfortable, easy to use • something that is absurd • the person who does science • not to be sure of something • a gesture or symbol that indicates something • the act of studying mathematics, physics and natural subjects

15 Clues: Gravitational force is always _____________ and never repulsive. • An ____________ collision is one in which kinetic energy is conserved • Centripetal acceleration is directed towards the ________ of the circle. • An ____________ collision is one in which kinetic energy is not conserved • ...

15 Clues: join together • make inoperative • formation of ions • negatively charged • short for nuclear_ • light and a noble gas • by the emission of radiation • one disintegration per second • life half its original value • relating to decay or particles • counter measures radioactivity • able to undergo nuclear fission • rod neutron absorbing substance • mass relates to an atom, in units • ...

15 Clues: mass per volume • maximum height of a wave • minimum height of a wave • waves are same as wave direction • time it takes to complete one cycle • how many times an event occurs per time • length of space that one cycle takes up • distance from successive crests of a wave • wave that will work in a medium or vacuum • waves are perpendicular to wave direction • ...

15 Clues: mass per volume • brighter than normal • more particles apart • concentration of force • more particles together • ability to bounce an echo • not as bright as surrounding tissues • the wave that needs a medium to propagate • number of complete wavelengths produced per second • maximum variation of a variable from its mean value • ...

15 Clues: A simple machine • Energy of motion • Energy of not motion • Used to hold things together. • A path for electricity to flow • The force you put on a machine • The force returned by a machine • Two circular objects put together • A block that thins down at the end • A way to use leverage to move things • Combination of all forces on an object • ...

15 Clues: to separate • upside-down • to come together • to make a copy of • to become less severe • Center, in the middle • can see through clearly • not letting light through • the process of burning something • a scale used to classify something • coming after something in time/following • the changing of one element into another by radioactive decay • ...

15 Clues: the basic unit of a chemical element • the SI base unit of electrical current. • the speed of something in a given direction. • a tendency to do nothing or to remain unchanged • the moving of something from its place or position. • the ability of a system to store an electric charge. • a vehicle's capacity to gain speed within a short time. • ...

15 Clues: Unit of force • Remain or move in a way • Force exerted per unit area • Able to maintain equilibrium • Point on which a lever pivots • Resultant turning effect of a force • Mass per unit volume of a substance • Condition of an object staying balanced • Force applied to a lever to move an object • Simple machine used to lift or move objects • ...

15 Clues: Force/Area • Mass/Volume • Turning force • Distance/Time • Converging lens • Mass x Velocity • Force x Distance • SI unit of charge • Mass x Acceleration • Rate of change of speed • Energy of a moving object • Energy transfer in fluids • Particle used in Rutherford's experiment • Waves used to broadcast television signals • Quantity which has a magnitude and direction

15 Clues: work is measured in • force times distance • speed divided by frequency • the variable k only effects • if mass doubles then momentum • centripetal acceleration is v^2 over • change in energy over change in time • if velocity doubles then kinetic energy • what type of quantity is speed and mass • the area under a speed vs time graph shows • ...

15 Clues: Affects inertia • Moves an objects • Distance and time • Motion resistance • Newton's First Law • Change in velocity • Unit that measures force • When two objects collide • Energy stored in an object • Energy of an object in motion • Distance, time, and direction • Change in an object's position • Quantity with magnitude and direction • Force of attraction between all matter • ...

15 Clues: Energy of motion. • Energy of position. • the unknown in the problem. • the variable is measured in. • Energy transfer through touch. • Energy transfer through fluid. • Energy transfer through space. • indentation of the fabric of space. • letter that represents the variable • Average kinetic energy of a system. • motion with respect of something else. • ...

15 Clues: ? = mass/volume • A unit for mass • ? = distance/time • A unit for weight • A unit for distance • ? = Mass*Acceleration • The change in velocity • ? = Force/Acceleration • The resistance to a change in potion • The amount of space an object takes up • Anything that has mass and takes up space • The speed of an object in a particular direction • ...

15 Clues: how fast an object is moving • how fast and in what direction it moves • both constant speed and constant direction. • When the speed of an object remains the same • is the rate at which the velocity is changing • the total distance covered divided by the time. • phenomenon in which an object changes its position • constrains the object to motion in a straight path • ...