Question

if the momentum of a body is doubled its kinematic
energy increased by

Answer 1

simple h .. 4 times ... ...

Answer 2

K.E=P^2/2m

if P is doubled then,

?K.E=4P^2/2m

j= 4(mv)^2*2/2m*mv^2

=4 times

therefore, if momentum is doubled the kinetic energy becomes 4 times