An impulse "I" given to a body changes its velocity from " v1 to v2 ". The increase in the kinetic energy of the body is given by
I(v1 + v2)
I(v1 + v2)/2
I(v1 - v2)
I(v1 - v2)/2
ΔKE=12mv22−v12,J=Δp=m(v−u)