1.

A shell at rest on a smooth horizontal surfaceexplodes into two fragments of masses m, andm. If just after explosion, m, move with speedu, then work done by internal forces duringexplosion is:(1) 5m, +m.). (2) }(m, +m.)u(3) zmu(1+) (4) (m. -mu

Answer»

1 one answer because of masses of fragments are of contains two speeds



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