Question: A 7 . 0 kg shell at rest explodes into two fragments, one with a mass of 2 . 0 kg and the other with

A 7.0 kg shell at rest explodes into two fragments, one with a mass of 2.0 kg and the other with a mass of 5.0 kg. If the heavier fragment gains 100 J of kinetic energy from the explosion, how much kinetic energy does the lighter one gain? A.150 J. B.100 J. C.50 J. D.250 J.

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