8.103: a) The wagon, after coming down the hill, will have speed α sin 2 gL = 10 m/s. After the “collision”, the speed is ( 29 ( 29 m/s, 6.9 m/s 10 kg 435 kg 300 = and in the 5.0 s, the wagon will not reach the edge. b) The “collision” is completely inelastic, and kinetic energy is
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