| A | B |
|---|
| centripetal acceleration | acceleration of an object toward the center of a curved or circular path. |
| centripetal force | a net force that is directed toward the center of a curved or circular path. |
| first law of motion | states that if the net force on an object is zero, then an object at rest remains at rest, or, if the object is moving, it continues moving with constant velocity. |
| gravity | attractive force between two objects that depends on the masses of the objects and the distance between them. |
| inertia | resistance of an object to a change in its motion. |
| law of conservation of momentum | states that if a group of objects exerts forces only on each other, then the total momentum of the objects doesn't change |
| momentum | property of a moving object that equals its mass times its velocity. |
| second law of motion | states that the acceleration of an object is in the same direction as the net force on the object, and that the acceleration equals the net force divided by the mass. |
| third law of motion | states that when one object exerts a force on a second object, the second object exerts a force on the first object that is equal in strength and in the opposite direction. |
| weight | gravitational force exerted on an object. |
