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Olympiad workbookNSEPRotational Motion

A body of mass 10 kg at rest explodes into two fragments of masses 3 kg and 7 kg . If the total kinetic energy of two pieces after explosion is 1680 J , the magnitude of their relative velocity in m/s after explosion is:

Options

A40
B50
C70
D80

Correct answer

A. 40

Step-by-step solution

No solution

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