Across
- 2. Newton's _______ law says that objects keep moving at a constant velocity or stay at rest unless there is a net force
- 4. An object has a ________ velocity when moving toward the motion detector
- 6. The force of gravity on an object
- 9. A collision in which objects stick together
- 10. Speed with direction
- 11. This increases when an object moves more quickly
- 13. An object has a _______ velocity when moving away from the motion detector
- 14. A measure of how hard it is to stop an object
- 16. A ________ diagram is a picture showing all of the forces on an object
- 17. This is lost in an inelastic collision(through sound or heat)
- 21. When an object is falling and weight is the only force
- 22. A unit for mass
- 23. Change in momentum
- 24. A collision in which objects bounce and don't break
- 26. The force of a surface pushing up on an object
- 28. A unit for force
- 30. The action of an object moving back when something is thrown forward
- 31. Newton's _______ law says that acceleration depends on force and mass
Down
- 1. The law of _________ of momentum says that the total momentum before and after a crash is the same
- 3. An object with a lot of this tends to keep doing what it's doing
- 5. When weight and the force of air resistance are balanced
- 7. If the stopping ______ is more, then the stopping force is less
- 8. The speed of a zero at the top of its path when thrown upward
- 12. How quickly velocity changes
- 15. Newton's _____ law says that forces are always equal (but opposite direction) when objects collide.
- 18. The total force on an object
- 19. The amount of matter that makes up an object
- 20. A force that acts against the direction of motion
- 25. Can be measured in m/s or mph
- 27. Where Ms. K will be in February
- 29. A push or pull