| A | B |
|---|
| momentum | a quantity defined as the product of the mass and velocity of an object |
| free fall | the motion of a body when only the force of gravity is acting on the body |
| projectile motion | the curved path that an object follows when thrown, launched near the surface of Earth |
| terminal velocity | the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity |
| inertia | the tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an outside force acts on the object |
| Newton's 3rd law | for every action there is an equal and opposite reaction |
| Newton's 1st law | an object at rest will remain at rest an object in motion will remain in motion |
| Newton's 2nd law | F=ma |
