Asked by unowen

A car moving at 15 m/s skids to a stop after 20 m. How far will it skid if it is moving at 45 m/s, assuming that the braking force is constant?

Answers

Answered by scott
the kinetic energy (which must be dissipated by the braking force) is proportional to the square of the velocity

3 times the velocity means 9 times the stopping distance
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