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ch.4: Accleration
accelerated motion in a straight line vocabulary.
| Question | Answer |
|---|---|
| acceleration | the rate of change in the speed of an object. |
| delta | "the change in" |
| constant accleration | speed that changes by the same amount every second |
| uniform accleration | another word for constant acceleration |
| slope | rise: amount the speed changes / run: amount the time changes |
| term | piece of an equation |
| initial speed | first term of the formula is the speed the object starts with |
| free fall | moving under the influence of gravity only |
| acceleration due to gravity | symbol: (g)equation: 9.8m/sec2 |
| time of flight | object takes the same time going up as it takes coming down |
| friction | when air resists the motion of objects moving through it |
| air resistance | when small objects at low speeds is neglected by air |
| terminal speed | maximum speed at which an object falls when limited by air friction |
| acceleration equation | accelertaion= change in speed/ chang in time= meters per second/second=meters/ second X second=m/sec2 |