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    Energy and Conservation Laws: Truck collision with car; original speed of truck

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    A 3,000-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are locked together after the collision and move with speed 9 m/s. What was the original speed of the truck before the collision?

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    Solution Summary

    The truck collision with cars and the original speed of cars are determined. The conservation laws and energy are analyzed.