A shell of mass 10 kg is moving with a velocity of 10 m s - 1 when it blasts and forms two parts of mass 9 kg and 1 kg respectively. If the 1st mass is stationary, the velocity of the 2nd is

Question

A shell of mass 10 kg is moving with a velocity of 10 m s - 1 when it blasts and forms two parts of mass 9 kg and 1 kg respectively. If the 1st mass is stationary, the velocity of the 2nd is, 1 m s - 1, 10 m s - 1, 100 m s - 1, 1000 m s - 1

MARKS App · Accepted Answer

G i v e n t h a t , v 1 = 10 m s - 1 ; m 1 = 10 k g v 2 = 0 ; m 2 = 9 k g v 3 = v ; m 3 = 1 k g According to conservation of momentum m 1 v 1 = m 2 v 2 + m 3 v 3 10 × 10 = 9 × 0 + 1 × v ⟹ v = 100 m s - 1

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