If momentum of a body increase by 25% its kinetic energy will increase

1.	If momentum of a body increase by 25% its kinetic energy will increase by
Answer» 25% 5% `125%` 56% Solution :Let momentum of `p_(1)=100%"momentum of " p-(2)=125%`. `p_(2)/p_(1)=5/4impliesp^(2)5/4p_(1) therefore v_(2)=5/4v_(1)` `"kinetic energy"=1/2mv(2)` `Einftyv^(2) E_(2)=(25)/(16)E_(1)` `"Increase in"K.E.=(E_(2)-e_(1))/e_(1)XX100=((25)/(16)E_(1)-E_(1))/E_(1)xx100` `=((25-16)/16E_(1))/E_(1)xx100=9/(16)xx100=56.25%`

Discussion