Tuesday
September 23, 2014

Homework Help: general science

Posted by frank on Tuesday, February 7, 2012 at 1:51pm.

a train goes forward at a speed of 1 m/s for 20 seconds. then it stops and goes backward at a speed of 0.5 m/s for 4 seconds. after both movements are completed, how far is the train located from its starting point.

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