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Force and Laws of Motion
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02/11/2021 4:25 pm
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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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02/11/2021 4:28 pm
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