A truck has a mass of 8000 kgs, a car has a mass of 1000 kgs and a bike has a mass of 100 kgs.All of them are moving with the same speed on a road. Then the kinetic energy will be more for the _____

truck

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car

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bike

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all the three have same kinetic energy

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Solution

The correct option is A
truck

We know that, kinetic energy K.E = $\frac{1}{2} m v^{2}$
where m and v are the mass and speed of the body respectively.
So, K.E is directly proportional to the mass of the body if speed remains constant.
Hence, the truck will have highest K.E.

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A truck has a mass of 8000 kgs, a car has a mass of 1000 kgs and a bike has a mass of 100 kgs.All of them are moving with the same speed on a road. Then the kinetic energy will be more for the _____

The correct option is A truck We know that, kinetic energy K.E = 12mv2 where m and v are the mass and speed of the body respectively. So, K.E is directly proportional to the mass of the body if speed remains constant. Hence, the truck will have highest K.E.

The correct option is A
truck

We know that, kinetic energy K.E = $\frac{1}{2} m v^{2}$
where m and v are the mass and speed of the body respectively.
So, K.E is directly proportional to the mass of the body if speed remains constant.
Hence, the truck will have highest K.E.