A 6 kg chemistry tube, which is at rest on a smooth plane,fragments into two pieces of...

Question

A 6 kg chemistry tube, which is at rest on a smooth plane,fragments into two pieces of masses 2 kg and 4 kg after an internal explosion.If the 2 kg piec moves due west at a velocity of 10 m/s after the explosion, what is the velocity of the other pieces ?

Answer 1

=2 kg, =4 kg, =10 m/s;
=;
=:=10×2/4=5 m/s.