Friday, January 6, 2012

Physics: Force question?

A car speeds through an intersection at 42.0 mph (18.8 m/s) and starts skidding (sliding) to a stop 24.1 m from a pedestrian. What is the minimum value of k that will prevent the car from reaching the pedestrian if he/she does not move? (ume g = 10 m/s2).

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