What happens to kinetic energy when velocity is doubled and mass is constant?

We have, K.E. = 1/2 mv2
Hence,

(i) On doubling the mass, at a constant velocity, the K.E. becomes double its original value.

(ii) On doubling the velocity, at constant mass, the K.E. becomes (2)2 i.e., 4 times its original value.

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