Physics Review

2. A push or pull
7. An object with a lot of this tends to keep doing what it's doing
10. A force that acts against the direction of motion
11. An object has a _______ velocity when moving away from the motion detector
12. The force of a surface pushing up on an object
14. Change in momentum
16. When weight and the force of air resistance are balanced
19. The speed of a zero at the top of its path when thrown upward
20. The action of an object moving back when something is thrown forward
21. A unit for mass
22. A unit for force
23. Newton's _______ law says that objects keep moving at a constant velocity or stay at rest unless there is a net force
24. An object has a ________ velocity when moving toward the motion detector
25. The law of _________ of momentum says that the total momentum before and after a crash is the same
27. A collision in which objects bounce and don't break
29. If the stopping ______ is more, then the stopping force is less

1. The force of gravity on an object
3. This is lost in an inelastic collision(through sound or heat)
4. Where Ms. K will be in February
5. The amount of matter that makes up an object
6. A measure of how hard it is to stop an object
8. Newton's _____ law says that forces are always equal (but opposite direction) when objects collide.
9. How quickly velocity changes
10. When an object is falling and weight is the only force
13. A ________ diagram is a picture showing all of the forces on an object
15. This increases when an object moves more quickly
17. A collision in which objects stick together
18. Speed with direction
22. The total force on an object
26. Newton's _______ law says that acceleration depends on force and mass
28. Can be measured in m/s or mph