Assertion : If momentum of a body increases by 50%, its kinetic energy will increase by 125%.
Reason: Kinetic energy is proportional to square of velocity.

Answer

A

Explanation

`As p_(2)=p_(1)+50%" of "p_(1)=(3//2)p_(1)`
`therefore v_(2)=(3//2)v_(1)`
As, kinetic energy `k alpha v^2`
`therefore K_(2)=9/4 k_(1)`
Increase in K.E. `=((K_(2)-K_(1))xx100)/(K_(1))=125%`