Question

what happens to the kinetic energy when 1) the mass of the body is doubled and velocity is half

Answer 1

Mass = m

Velocity = v

Kinetic Energy = ½mv²

Now,

Mass = 2m

Velocity = v/2

Then,

Kinetic energy = ½mv²

=> ½×2m×(½v)²

=>¼mv²

So,

When the mass of the body is doubled and velocity is halved then it's kinetic energy becomes 1/4th.

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