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May 4, 2015

Homework Help: physics

Posted by sally on Friday, February 3, 2012 at 2:54am.

A train 400 m long is moving on a straight track with a speed of 80.1 km/h. The engineer applies the brakes at a crossing, and later the last car passes the crossing with a speed of 16.9 km/h. Assuming constant acceleration, determine how long the train blocked the crossing. Disregard the width of the crossing

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