Unit 7 Physics Vocabulary

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Across
  1. 3. a force acting directly in contact with an object
  2. 6. unit of measurement of force (N)
  3. 9. forces acting on an object that cancel each other out causing a net for of zero and causing no change in movement
  4. 11. is speed in a given direction
  5. 13. is a force that is opposite of motion between two surfaces that are touching causing it to slow down. A frictionless surface will not affect motion.
  6. 14. is the amount of matter in an object measured in grams or kilograms.
  7. 17. is the rate at which velocity changes (speed or direction) over time as a result of unbalanced forces and mass of the object.
  8. 19. three principles that explain the relationship between an object's motion and the forces applied to it; at least two laws always apply
  9. 21. is speed that is steady or unchanging
  10. 23. stored energy of an object due to position, condition, or composition (ex: chemical energy can be food, propane gas, or batteries)
  11. 24. energy of objects in motion.
Down
  1. 1. gravity is the pull toward another object based on its mass. Gravity is constant meaning it is always pulling objects down at 9.8m/s2
  2. 2. Newton’s Third Law states that all forces occur in contact pairs where every action force has a reaction force that is equal in strength and opposite in direction.
  3. 4. Newton’s Second Law of motion states that the acceleration of an object depends on its mass and the amount of force applied where F = ma, objects accelerate in the direction of the unbalanced force. Acceleration is proportional to force but inverse to mass
  4. 5. is the rate of change at which an object moves a distance over time.
  5. 7. any push or pull between two objects, measured in Newtons (N)
  6. 8. net force greater than zeros that cause changes in motion of an object in the direction of the greater force
  7. 10. is the sum of all forces acting on an object within a system, includes both magnitude (strength) and direction
  8. 12. change in an object’s position or location
  9. 15. is total distance traveled divided by total amount of time taken
  10. 16. group of items interacting to form a unified whole.
  11. 18. support force of a surface an object is in contact with preventing it from falling
  12. 20. Newton’s First Law states that an object's motion will not change unless an unbalanced force acts on it. Meaning if an object is moving it stays moving at the same speed and direction until forced to change.
  13. 22. is the tendency of all objects to resist change in motion dependent on mass, to keep doing what they are already doing