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A. what forces should we include in a free body diagram?B. At t=0 , a 5 kg car goes down a ramp ata 20 angle.

A. what forces should we include in a free body diagram?B. At t=0 , a 5 kg car goes down a ramp ata 20 angle. at 10 meters, the car hits arough patch with a 0.45 coefficient ofkinetic friction. find the acceleration ofthe car before and after hitting therough patch on the ramp

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