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Q.

Is it true that the heavy objects moving at a certain velocity have the same kinetic energy as the lighter objects moving with the same velocity?


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a

True

b

False 

answer is B.

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Detailed Solution

The above statement is False.
We know that, K.E.=12mv2, where m and v are the mass and velocity of an object respectively.
So, the kinetic energy depends upon the object's mass and velocity. If two objects are moving with the same velocity, then the kinetic energy is directly proportional to the mass of the objects. Hence, the lesser the mass lower the kinetic energy.
The correct statement would be that the objects with different masses moving with the same velocity will have different kinetic energies.
 
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