| A | B |
|---|
| velocity | speed in a specific direction |
| accleration | rate at which velocity changes with time |
| mass | how much matter an object is made of |
| force | a push of a pull |
| net force | overall force acting on an object when all the forces are combined |
| contact force | one object pushes or pulls another by touching it |
| gravity | force of attraction between two masses |
| friction | force that resists motion between 2 surfaces that are pressed together |
| inertia | resistance of an object to a change in the speed or the direction of its motion |
| centripetal force | any force that keeps an object moving in a circle |
| kinetic energy | the energy of motion |
| potential energy | stored energy |
| mechanical energy | combination of kinetic and potential energy |
| GPE | gravitational potential energy |
| nuclear energy | potential energy stored in the nucleus of an atom |
| chemical energy | energy stored in chemical bonds that hold chemical compounds together |
