| A | B |
|---|
| velocity | describes the speed and the direction of an object's motion |
| velocity formula | distance/time + direction |
| force | a push or pull that acts on an object |
| gravity | pulls objects toward the center of the earth |
| magnetism | a force that pushes and pulls on other objects |
| friction | acts to slow down the motion of an object or keep it from starting to move |
| work | is done when a force moves and object |
| work formula | force X distance |
| power | the rate at which work is done |
| power formula | work/time |
| equilibrium | state when all the forces acting on an object balance each other |
| inertia | the tendency of an object to resist any change in motion |
| acceleration | the rate at which the velocity of an object changes over time |
| force formula | force = Mass X Acceleration |
| machine | a device that changes the direction or the amount of force needed to do work |
