Two bodies P and Q are of mass m and 5 m and with velocities v & 5 v respectively. Assuming bodies are moving with uniform velocities, compare the force required to stop them.
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Momentum of P = m v
Momentum of Q = 5m 5v = 25 mv
Ratio of momenta P : Q = 1 : 25
Force is time rate of change of momentum. Assume that they are stopped in the same duration.
THen ratio forces = mv /t : 25 mv /t = 1 : 25
Momentum of Q = 5m 5v = 25 mv
Ratio of momenta P : Q = 1 : 25
Force is time rate of change of momentum. Assume that they are stopped in the same duration.
THen ratio forces = mv /t : 25 mv /t = 1 : 25
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