Let a particle of mass 3m have an initial velocity of v0i and undergo an elastic glancing collision with a particle of mass 2m initially at rest. After the collision, the 3m particle moves off at an angle of 30° above the + x-axis.
1. What is the speed of the 3m particle after the collision?
2. What is the velocity (magnitude and direction) of the mass 2m parrticle the collision?