| A | B |
|---|
| centripetal acceleration | acceleration of an object toward the center of a circular path |
| centripetal force | force directed toward the center of a circle |
| friction | force that opposes motion between two touching surfaces |
| law of gravitation | states that two masses exert attractive forces on each other |
| momentum | property that a moving object has because of its mass and velocity |
| Newton's second law of motion | states that a net force cause an object to accelerate in the direction of the force |
| Newton's third law of motion | states that to every action force there is an equal and opposite reaction force |
| weight | gravitational force exerted by the Earth on an object |
