Question

If velocity increases 4 times, then what will be the effect on k.E.

Answer 1

We know, K. E. =1/2. mv2

If velocity becomes 4v

Then K. E. =1/2. m(4v)2

or, K. E. =1/2. m. 16v2

Therefore, K. E. =8mv2 (ans)

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