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April 20, 2014

Homework Help: Physics

Posted by kago on Thursday, October 20, 2011 at 11:30pm.

A 0.90 10^3 kg sports car collides into the rear end of a 2.4 10^3 kg SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 4.6 m before stopping. The police officer, estimating the coefficient of kinetic friction between tires and road to be 0.40, calculates the speed of the sports car at impact. What was that speed?

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