A 0.30 kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.20 kg puck that is initially moving along the x axis with a velocity of 1.8 m/s. After the collision, the 0.20 kg puck has a speed of 1.1 m/s at an angle of ? = 53° to the positive x axis.
(a) Determine the velocity of the 0.30 kg puck after the collision.
m/s at ° from +x axis
(b) Find the fraction of kinetic energy lost in the collision.
|?KE|
KEi
= %