Unit 2 Terms

3. force that opposes the initiation of movement
8. all objects attract eash other through gravity
10. for every action, there is an opposite and equal reaction
13. air resistance is equal to gravity so the highest falling speed is achieved
14. force opposing movement of objects that are moving
16. the only force acting on an object is gravity
18. all forces acting on a body
19. force opposing the sliding motion of an object
20. amount of gravitational force acting on an object

1. force=mass*acceleration
2. an object in motion will stay in motion and an object at rest will stay at rest unless acted on by an outside force
4. the tendency of an object the resist change in motion
5. gravity,electromagnetic,strong nuclear force,weak nuclear force
6. total momentum remains the same through the convertion of momentum
7. force not touching
9. force opposing the motion of objects in contact with each other
11. a push or a pull
12. mass*velocity
15. force opposing the rolling motion in an object
17. forces requiring the touching of two or more objects