| A | B |
|---|
| Newton's second law of motion | the acceleration of an object is in the same direction as the net force on the object |
| friction | is the force that opposes the sliding motion of two surfaces that ar touching each other |
| static friction | the frictional force that prevents two surfaces from sliding past each other |
| sliding friction | the force that opposes the motion of two surfaces sliding past each other |
| air resistance | opposes the motion of objects that move through accelerations and different speeds; acts in the opposite direction ot the motion of the object through air |
| gravity | is the attractive force between any two objects that depends on the masses of the objects and the distance between them |
| weight | the gravitational force exerted on an object |
| centripetal acceleration | acceleration toward the center of a curve or circular path |
| Newtons third law of motion | to every action force there is an equal in strength and opposite in direction |
| centripetal force | the net force exerted toward the center of a curved path |
| momentum | is the product of its mass and velosity |
