| A | B |
|---|
| force | a push or a pull that acts on an object |
| *electrostatic force | the force produced by friction, when one object rubs against another, creating electric charge |
| gravity | the force of attraction that keeps things on the ground; also, the pull of one object on another |
| magnetic force | the force created between a magnet and (usually) a metal |
| newtonmeter / forcemeter | a device used to measure the force of gravity |
| newton (N) | a unit of force |
| weight | the downward force of gravity acting on an object’s mass; measured in Newtons (N) |
| *callibrate | to mark the scale of a measuring instrument so that readings can be made in appropriate units |
| mass | the amount of matter in an object; measured in g or kg |
