Calculate the change in momentum of a body weighing 5 kg when its velocity decreases from 20 m/s to 0.20 m/s

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Solution

Mass of body=5 kg
Velocity $v_{1} = 20 m / s$
Momentum $p_{1} = 20 \times 5 = 100 k g . m / s$
Velocity $v_{2} = 0.2 m / s$
Momentum $p_{2} = 5 \times 0.2 = 1 k g . m / s$
Change in momentum = $p_{2} - p_{1} = 1 - 100 = - 99 k g . m / s$ (Negative sign shows that momentum decreases)

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Calculate the change in momentum of a body weighing 5 kg when its velocity decreases from 20 m/s to 0.20 m/s

Mass of body=5 kgVelocity v1=20m/sMomentum p1=20×5=100kg.m/sVelocity v2=0.2m/sMomentum p2=5×0.2=1kg.m/sChange in momentum =p2−p1=1−100=−99kg.m/s(Negative sign shows that momentum decreases)

Mass of body=5 kg
Velocity $v_{1} = 20 m / s$
Momentum $p_{1} = 20 \times 5 = 100 k g . m / s$
Velocity $v_{2} = 0.2 m / s$
Momentum $p_{2} = 5 \times 0.2 = 1 k g . m / s$
Change in momentum = $p_{2} - p_{1} = 1 - 100 = - 99 k g . m / s$ (Negative sign shows that momentum decreases)