1.

Calculate the change in momentum of a body weighing 10 kg when its velocity decreases from 20 m/s to 0.2 m/s

Answer»

Hello Mate!

SINCE we know that momentum = MASS × velocity.

p = mv

INITIAL momentum = 10 kg × 20 m/s

= 200 kg m/s

Final momentum = 10 kg × 0.2 m/s

= 2 kg m/s

Change in p = Final p - Initial p

= ( 200 - 2 ) kg m/s

= 198 kg m/s

Change in momentum is 198 kg m/s

Have great future ahead!


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