Question

A ball of mass 100g is moving with a velocity of 0m/s is stopped by a boy in 0.2s. Calculate the force applied by the boy.

Answer 1

$Given :   m=100 g=0.1 kg           v=10 m/s        Δt=0.2 s</p><p></p><p>Change in momentum    ΔP=∣Pi−Pf∣=mv−0</p><p></p><p>⟹ ΔP=0.1×10=1 kg m/s</p><p></p><p>Force   F=ΔtΔP=0.21=5 N</p><p></p><p>Acceleration   a=mF=0.15=50 m/s2</p><p></p><p>$

Hope my help helps u

Answer 2

Step-by-step explanation:

Their is some mistake in ur question........

how can ball move with velocity=0m/sec....

plz post it again.......

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