A hand grenade is thrown with speed v 0 = 30 m/s, as sketched in Figure P7.51,

Question:

A hand grenade is thrown with speed v₀= 30 m/s, as sketched in Figure P7.51, just prior to exploding. It breaks into two pieces of equal mass after the explosion. One piece has a final velocity of 40 m/s along x. Find the velocity of the other piece after the explosion.

Figure P7.51