| A | B |
|---|
| kinetic energy | energy of motion |
| centripetal force | force that moves toward the center of a circle |
| mass | amount of matter in an object |
| acceleration | rate at which velocity changes over time |
| velocity | speed in a given direction |
| weight | amount of force exerted on an object due to gravity |
| gravity | attractive force between two objects |
| inertia | property of an object that resists change in motion |
| speed | distance covered per unit of time |
| momentum | depends on the mass and velocity of an object |
| Newton | unit of measurement for force |
| Newton's 1st Law (Law of Inertia) | things keep moving or stay at rest, unless a net force acts upon it |
| Newton's 2nd Law (F=ma) | force causes acceleration, while mass resists acceleration |
| Newton's 3rd Law (Law of Equal and Opposite Force) | for every action there is an equal and opposite reaction |
| force | any action that can change or cause motion |
| net force | the sum of all the forces and has direction |
| unbalanced force | force that opposes motion |
| centrifugal force | force that moves toward the outside of a circle |
| mechanical force | force caused by motion |
| electro-magnetic force | force that holds protons and neutrons together |
