(Solved): 2D collisionThe mass of the left-travelling blue puck in the figure below is 21.2% greater than the ...

2D collision

The mass of the left-travelling blue puck in the figure below is 21.2% greater than the mass of the right-travelling green one.

8a. Before colliding, the pucks approach each other with equal and opposite momenta, and the green puck has an initial speed of 11.5 m/s. The angle ?=32.8?. If half the kinetic energy is lost during the collision, calculate the speed in m/s of the blue puck (initially travelling to the left) after the collision.

8b. What is the speed in m/s of the green puck (initially travelling to the right) after the collision?