Question

If the linear momentum of a body increases by 20%, what will be the % increase in the kinetic energy of the body?

Answer 1

44%
i will give u a short equation to find it easily
...if momentum changes by n×100%....
then K.E changes by [(n+1)²-1]×100

Answer 2

Answer: 44 %

Explanation:

when the momentum (or velocity) is changed by a factor of 'n', the KE changes by a factor of (n^2 - 1).

when momentum is increased by 20%, n = 1.2.

KE changes by (n^2 - 1) i.e. (1.44 - 1) = 0.44

To get the answer in %, multiply the result by 100.