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Question

A car of mass 600kg is moving with a speed of 10ms−1 while a scooter of mass 80kg is moving with a speed of 50ms−1. Compare their momentum.

A
2:3
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B
1:2
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C
3:1
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D
3:2
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Solution

The correct option is D 3:2
As we know that momentum is nothing but product of mass and velocity. Let us substitute the given values.

Given that mass of the car as 600 kg and velocity as 10 m/sec.

Hence momentum of the car is P=600×10=6000kgm/sec.

We have mass of the scooter as 80 kg where as velocity is 50 m/sec.

Hence momentum is P=80×50=4000kgm/sec.

Therefore, momentum are in the ratio 3:2.

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