| A | B |
|---|
| motion | A change in position |
| force | to push or a pull |
| work | When a force moves an object |
| speed | The measure of how fast something moves over a certain distance |
| gravity | The force that pulls objects toward each other |
| weight | A measure of the pull of gravity on an object. |
| simple machine | A tool that helps people do work |
| inclined plane | A flat surface that is higher on one end than the other end |
| lever | A bar that moves on or around a fixed point |
