1. A large box sitting at rest on a floor spontaneously fractures into two parts. One piece has mass m1, and the other piece has mass mg. The ratio of the splintered pieces is: m2 _ = T 7711 [a]: Determine the ratio of the magnitudes of the postexplosion velocities, 132 1"'1 (b) Determine the ratio of the postexplosion kinetic energies, K52 KE1 Express your final answers in terms of the ratio you are given