| A | B |
|---|
| force | push or pull |
| gravity | force of attraction betweeen all objects in teh universe |
| newton | metric unit of force |
| air resistance | force that opposes the movement of an object in air |
| terminal velocity | speed at which air resistance and gravity acting on a failing object are equal |
| vacuum | empty space |
| friction | force that opposes the motion of an object |
| lubricants | substances that reduce friction |
| fluid pressure | pressure in gases and liquids |
| pressure | force per unit area |
| barometer | instrument used to measure air pressure |
| manometer | instrument used to measure pressure in a liquid |
| Bernoulli's principle | principle that states that as the speed of a fluid increases, its pressure decreases |
