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a hiker throws a ball horizontally from a hill 21.0 m high. The hiker's height is 1.750 m. The magnitude of the horizontal velocity is 7.0 m/s. Find the distance between the base of the hill and the...

A compact car, mass 825 kg, moving south at 15 m/s, is struck by a full-sized car, mass 1588 kg, moving east at 12 m/s. The two cars stick together, and momentum is conserved in the collision. A.Find...

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