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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. - Science

Answer in Brief

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

For example,
Given that:
mass, m = 5 kg
velocity, v1 = 20 m/s
Therefore, momentum of a body moving with velocity v1, p1 = m × v1
= 5 × 20 = 100 kg.m/s

Now,
mass, m = 5 kg
velocity, v2 = 0.20 m/s
Therefore, momentum of a body moving with velocity v1, p2 = m × v1
= 5 × 0.20 = 1 kg.m/s
Change in the momentum of a body = p1 − p2
                                                          = 100 − 1
                                                          = 99 kg.m/s

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APPEARS IN

Lakhmir Singh Science Class 9 Physics
Chapter 2 Force and Laws of Motion
Long Answers | Q 36.2 | Page 56
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