Question

A shell at rest explodes into two pieces of equal mass. the two will be

a.at rest

b.move with different velocities in different directions

c.same velocity in opposite directions

d.same velocity in the same directions

Answer 1

same velocitry in opposite direction so that total momentum is conserved.........

v1=-v2.........

Answer 2

they will move with c. same velocity in opposite directions as conservation of momentum is required.
0=mv1+mv2
=>v1=-v2 where m is mass of each fragment and v1 ,v2 are their respective velocities .