Unit 4 - Forces and Motion

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Across
  1. 4. an object’s distance and direction from a reference point.
  2. 5. the combination of all the forces acting on an object.
  3. 7. the forces two objects apply to each other.
  4. 8. the gravitational force exerted on an object.
  5. 9. a push or a pull on an object.
  6. 10. a measure of the change in velocity during a period of time.
  7. 12. a region of space that has a physical quantity (such as a force) at every point.\
  8. 16. the difference between the initial, or starting, position and the final position.
  9. 17. when colliding objects bounce off each other.
  10. 18. Newton's ______ law says that when an object applies a force on another object, the second object applies a force of the same strength on the first object but the force is in the opposite direction.
  11. 19. the process of changing position.
  12. 20. Newton's ______ law that says an object at rest will stay at rest, and an object in motion will stay in motion unless a force acts on the object.
Down
  1. 1. an attractive force that exists between all objects that have mass.
  2. 2. a force that one object applies to another object without touching it.
  3. 3. the force that pushes perpendicular to the object’s surface.
  4. 6. the starting point you choose to describe the location, or position, of an object.
  5. 7. contact force that resists the sliding motion of two surfaces that are touching.
  6. 11. the speed and the direction of a moving object.
  7. 13. a push or a pull on one object by another object that is touching it.
  8. 14. a measure of the distance an object travels in a given amount of time.
  9. 15. a quantity that has both magnitude and direction.