A particle of mass m moving in the x direction with speed 2v is hit by another particle of mass 2m moving in the y direction with speed v. If the collision is perfectly inelastic , the percentage loss in the energy during the collision is close to:

Question

$\begin{array}{1 1} 62 \% \\ 44 \% \\ 50 \% \\ 56 \% \end{array}$