Question

MULTIPLE CHOICE QUESTION----
if the momentum of a body increases by n times , it's kinetic energy increases -
a) n^2
b) n times
c) 2n times
d) no change
PLZZ ANYONE HELP ME!!!!!

Answer 1

n square is the rt answer
Use formula ke=p*2/2m

Answer 2

we know that
K= P^2/2m

a/q- P'= nP

so, K'= P'^2/2m
= (nP)^2/2m
=n^2 P^2/2m
= n^2 K

so, kinetic energy increases by n^2 times

Hope it is useful