Physics Work,Power & Energy Level: Misc Level

An object initially at rest breaks into two pieces as the result of an explosion. One piece (m2) has four times the kinetic energy of the other piece (m1). What is the ratio of the masses of the two pieces?

m1/m2= Which piece has the larger mass?The masses must be equal. The piece with the larger kinetic energy. The piece with the smaller kinetic energy.