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A girl of mass 50 kg jumps out of a rowing boat of mass 300 kg on to the bank, with a horizontal velocity of 3 m/s. With what velocity does the boat begin to move backwards?

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A girl of mass 50 kg jumps out of a rowing boat of mass 300 kg on to the bank, with a horizontal velocity of 3 m/s. With what velocity does the boat begin to move backwards?

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Mass of the boat mb = 300 kg

Velocity of boat vb

Mass of girl mg = 50 kg

Velocity of girl vg = 3 m/s

Acc. to the law of conservation of momentum

mbvb = mgvg

300 x vb = 50 x 3

vb = \(\frac{50 \times 3}{300}\)

= 0.5 m/s

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