A 0.300-kg puck, initially at rest on a horizontal, frictionlesssurface, is struck by a 0.200-kg puck moving initially along the xaxis with a speed of 2.00 m/s. After the collision, the 0.200- kgpuck has a speed of 1.00 m/s at an angle of θ = 53.0° to thepositive x axis. (a) Determine the velocity of the 0.300-kg puckafter the collision. (b) Find the fraction of kinetic energy lostin the collision.
and please explain