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Question

A truck has a mass of 8000 kg, a car has a mass of 1000 kg and a bike has a mass of 100 kg. All of them are moving with the same velocity on a road. Then, the kinetic energy will be highest for the:



Correct Answer
A

Truck

Your Answer
B

Car

Your Answer
C

Bike

Your Answer
D

All three have same kinetic energy


Solution

The correct option is D

Truck


We know that, kinetic energy K.E =12mv2
where m and v are mass and velocity of the body respectively.

Here as the velocity is constant, K.E is directly proportional to mass.
As the truck has more mass, it will have the highest kinetic energy.

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