Question

if velocity of an object is doubled what is the change in KE​

Answer 1

Explanation:

Kinetic energy = 1/2 mv^2 ----(1)

so v is doubled

= 1/2m (2v)^2

= 1/2m(4v^2)

=m2v^2 --------(2)

so let's compare

change in kinetic energy = m2v^2 / 1/2mv^2

= 4

so kinetic energy get 4 times when velocity is doubled

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