A pool ball moving 1.33 m/s strikes an identical ball at rest. Afterward, the first ball moves 0.814 m/s at a 33.3° angle?

Question

A pool ball moving 1.33 m/s strikes an identical ball at rest. Afterward, the first ball moves 0.814 m/s at a 33.3° angle. What is the y-component of the velocity

of the second ball?

Answer 1

Draw diagram

Conservation of Momentum

--->

the y-component of the velocity of the second ball = -0.814 sin(33.3) = ...