Thank you for bringing this up, because it seemed wrong when I was doing it. I guess I just got confused because there is no inital momentum in the y direction.
So
Pix=Pfx = M1iVo = M1V1fCos(theta)+M2V2fcos(phi)
Piy = Pfy = 0 = M1V1fsin(theta)-M2V2fsin(phi)
??
Homework Statement
Consider an inelastic collision between two blocks on a horizontal plane. Block M1 is moving with velocity Vo and collides with block M2 which is at rest. During the collision a fraction Q of the original kinetic energy is lost. It is observed that M1 is deflected by an angle...