Question

4. What is the change in momentum of a car weighting 1500kg when it's speed increase s from 36 km / hr to km/ hr uniformly ?

please give me answer ...​

Answer 1

Answer:

Momentum of car at speed 36km/h=10m/s=m×10

=1500×10

=15000kg m/s

Momentom of car at speed 72km/h=20m/s=m×20

=1500×20

=30000kg m/s

Momentom change=30000−15000=15000kg m/s

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Answer 2

You didn't mention the change in speed(question error), so I'll assume it as x, you can enter value of x by yourself.

Change in momentum=Final momentum-Initial momentum

=mx-mu=1500x-1500×36

=1500(x-36)Kg m/s

You can simply put value of x, and simplify.

Hope it helps.