Newton's laws

5. an object at rest stays at rest and an obejct in motion stays in motion unless acted on by an outside force
6. the size or quantity of something
10. the way that something causes a change
14. change in velocity (speed, direction, or both)
15. the number of newton's laws of motion
17. for every action there is an equal and opposite reaction
18. the sum of all forces acting on an object

1. resistance or force of equal magnitude acting in the opposite direction to an action force
2. scientist who discovered the laws of motion
3. forces on an object that cause change in motion of the object
4. a straight path that an object can move along
7. when net forces cancel each other out
8. the state of an object when it is not in motion
9. a change in an object's position with respect to time
11. the tendency of a physical object to remain still or continue moving unless a force is applied
12. acceleration depends on the mass and the net force acting upon it
13. a force that resists the motion of two surfaces sliding across one another
16. a push or pull that can change the motion of an object