Question

a 3.00 kg block is initially moving to the east at 5.00 m/s across a rough surface. After the block has traveled 2.00 meters, it collides elastically with a 5.00 kg block. The collision is head-on so that all motion is in the east-west direction. The coefficient of kinetic friction between the surface and the blocks 0.100
a) what is the velocity of the first block immediately before the collision
b) what is the velocity of the 3.00 kg block immediately after the collision
c) how far does the 5.00 kg block travel after the collision before coming to rest