1. The problem statement, all variables and given/known data In the figure shown, a ball of mass m collides perpendicularly on a smooth stationary wedge of mass M, kept on a smooth horizontal plane. If the coefficient of restitution of collision is e, then determine the velocity of the wedge after collision. 2. Relevant equations can we conserve momentum when the collision is partially elastic ? 3. The attempt at a solution i wrote→ mV°sinθ= MV + meV°sinθ is this right??