Question

the kinetic energy of an object of mass m, moving with a velocity of 4 m/s is 16j. what will be it's kinetic energy when it's velocity is double and reduce to half​

Answer 1

Answer:

$mass \: is \: 2 \\ so \: when \: velocity \: is \: doubled \: ke \: = 64j \: \\ velocity \: is \: halved \: ke = 4j$

Answer 2

Answer:

it will also become double on doubling kE and would reduce to half on reducing the KE

Explanation:

because the formula of kE is 1/2 mv square which means it is directly proportional to velocity