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A 10,000-kg car moving towards the right at 48 mph collides head on with a 25,000-kg car moving towards the left. During the collisions both

A 10,000-kg car moving towards the right at 48 mph collides head on with a 25,000-kg car moving towards the left. During the collisions both cars stick together and don't move. Find the speed of the other car before the collision. Give your answer in mph.

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