Unit 2 - Physical Science

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Across
  1. 4. Friction between two moving objects
  2. 7. Friction between non-moving objects
  3. 10. the curved path that an object follows when thrown, launched, or otherwise projected near the surface of Earth (________ motion)
  4. 12. a measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe
  5. 15. the rate at which the velocity changes over time; an object accelerates if its speed, direction, or both change
  6. 16. the tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an outside force acts on the object
  7. 17. a push or a pull exerted on an object in order to change the motion of the object
  8. 19. Newton's _______ Law: Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first
  9. 20. the SI unit for force (symbol, N); equal to 1 kg ∙ m/s2
  10. 21. a force that opposes the motion between two surfaces that are in contact
Down
  1. 1. a force of attraction between objects that is due to their masses
  2. 2. Newton's _______ Law: The acceleration of an object depends on the mass of the object and the amount of force applied
  3. 3. change in velocity/ time
  4. 5. Newton's _______ Law: An object at rest will remain at rest …unless acted upon by an external force. An object moving at a constant velocity will continue to move at a constant velocity….unless acted upon by an external force
  5. 6. measure of the amount of matter in an object
  6. 7. the distance traveled divided by the time interval during which the motion occurred
  7. 8. a quantity defined as the product of the mass and velocity of an object
  8. 9. the speed of an object in a particular direction
  9. 11. an object’s change in position relative to a reference point
  10. 13. (two words)the combination of all the forces acting on an object
  11. 14. Mass * Acceleration
  12. 18. distance/ time
  13. 19. the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity
  14. 21. (two words) the motion of a body when only the force of gravity is acting on the body