A driver loses control of his car and the car slams into a bumper protecting a b

Question

A driver loses control of his car and the car slams into a bumper protecting a bridge, compresses the bumper, and bounces back out. The driver steps on his brakes just as the car hits the bumper, so that the tires skid for the entire time of the collision. (The friction will be in a direction opposite to the velocity.) At which time(s) during the collision listed below is the acceleration of the car the greatest? I already know that the answer isn't just A. B)When the bumper is compressed half-way as the car is moving to the right. C)Just before the bumper is fully compressed. (v is to the right and just before v = 0.) D)Just after the bumper is fully compressed. (v is to the left and just after v = 0.) E)When the bumper is compressed half-way as the car is moving to the left. H)B & E I)C & D

Explanation / Answer

answer = D wwhen comp;ete;y compressed remaining all cases it is opposing car along friction thats why D is answer

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