Q8 of 21 Page 109

If a bullet of mass 5 grams moving with velocity 100 ms–1 penetrates the wooden block up to 6 cm. Then the average force imposed by the bullet on the block is

mass of bullet = 5g = 0.005 kg

Velocity of the bullet = u = 100 ms–1


Distance penetrated inside the wooden box = 6 cm


= 0.06m


To Find : Average Force imposed by the bullet on the block


Force = Mass x acceleration


Let acceleration = a


Final speed = v = 0


Initial speed = u = 100 ms–1


S = 0.06







Force = F = mass x acceleration




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