Question

How does the kinetic energy of the body changes if it's momentum is doubled

Answer 1

Hey There

momentum M=mv where m=mass 

and v=velocity 

if moentum of mass is doulbed M=2(mv)=m(2v) 

since mass is constant,velocity will be doubled

now, kinetic energy K=1/2*mass *velocity^2 

= 1/2*m*(2v)^2 

=2 m v^2 
so percentage change in kinetic energy=(2mv^2-(1/2)mv^2 )/(1/2)mv^2*100% 

=(3/2)mv^2/(1/2)mv^2*100% 

= 300% 

so answer is 300%










Hope You Like It.

Answer 2

kinetic energy reduce to half