What was the initial speed of the automobile

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An automoble of mass 3000kg is driven into a brick wall in a safetytest. The bumper behaves like a hooke's-law spring. It has aneffective spring constant of 5x106N/m, and is observed to compress a distance of 5.29 cm as the car is brought to a rest. What was the initial speed of the automobile? Answer in units ofm/s.

Reference no: EM13648489

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