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5. A runaway truck with a mass of 2100 kg strikes a car of mass 1350...

5. A runaway truck with a mass of 2100 kg strikes a car of mass 1350 kg, which was at rest before the collision. The car’s wheels are locked during the entire event, but the truck has no brakes, i.e., it is rolling freely on the road. The two vehicles move forward together, and the car’s tires leave skid marks for a distance of 1.5 m. Suppose that the coefficient of kinetic friction between the car’s tires and the road is 0.80. How fast was the truck travelling before the collision?


The answer is 5.0 m/s, can you explain how to get this answer
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Answer #1

M, AM2 From the conservation of momentum.: Po=PE m. Vo + M2 (0) = (M. +MU - = miro the acceleration of to the colleision a=fr

The correct answer is 8.0 m/s.

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