Speed, Velocity, and Acceleration
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10 terms
Terms | Definitions |
|---|---|
 distance/time | Speed measurements are given in units of _____ |
| distance/time^2 | Measurements of acceleration are given in units of _____ |
| average speed | If you know a car travels 30 km in 20 minutes, you can find its _____ |
| is always changing direction | A child on a merry-go-round is accelerating because the child |
| acceleration | If you divide the increase in an object's speed by the time taken for that increase, you are determining the object's _____ |
| 40 km/hr | A rider finishes a 120-km bicycle trip in 3 hours. The average speed of the rider is _____ |
| 100 cm | The trunk of a certain tree is 50 cm thick. Each year it gets thicker by 1 cm. How thick will the tree trunk be in 50 years? |
| velocity also tells direction | It can be important to know the velocity of an object, not just its speed, because _____ |
| average speed | A runner starts a 5-km race at 10:15 a.m. and finishes at 10:35 a.m. Given this information, you can calculate the runner's _____ |
| 360 km/hr | An airplane flies 80 km in 10 minutes an then flies 100 km in 20 minutes. The average speed of the airplane is _____ |
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