Test Preparation on Work, Energy, Power and Collision-II-Physics Test Series For NEET 2020

A light and a heavy body have equal momenta. Which one has
greater K.E

A bullet of mass 0.02 kg travelling horizontally with velocity
250ms -1 strikes a block of wood of mass 0.23 kg which
rests on a rough horizontal surface. After the impact, the
block and bullet move together and come to rest after
travelling a distance of 40m. The coefficient of sliding friction
of the rough surface is ( 2 g = 9.8ms -1)