Newtons Laws

3. a tendency to do nothing or to remain unchanged.
4. Balanced forces are equal in size and opposite in direction. When forces are balanced, there is no change in motion. In one of your situations in the last section, you pushed or pulled on an object from opposite directions but with the same force. You observed that the object did not move.
6. increase in the rate or speed of something.
7. the speed of something in a given direction.
9. Net force is the vector sum of forces acting on a particle or body
10. forces acting on an object causing it to move
11. the SI unit of force. It is equal to the force that would give a mass of one kilogram an acceleration of one meter per second per second, and is equivalent to 100,000 dynes.

1. strength or energy as an attribute of physical action or movement.
2. the resistance that one surface or object encounters when moving over another
5. f=ma
6. when someone or something does something and it makes a reaction
8. the rate at which someone or something is able to move or operate.