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April 16, 2014

April 16, 2014

Posted by **ami** on Friday, August 27, 2010 at 8:39am.

(a) Calculate its average speed.

(b) Calculate its average velocity for the entire trip, using "away from the trainer" as the positive direction.

- phy -
**drwls**, Friday, August 27, 2010 at 10:04am(a) It travels a total of 210 m in 21 s. Ignore the fact that the direction changes. The average speed is 210/21 = 10 m/s.

(b) The net displacement is 70 m in 21 s. The average velocity is 70/21 = 3.33 m/s

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