A billiard ball traveling at 3.00 m/s collides perfectly elastically with an identical billiard ball initially at rest on the level table. The initially moving billiard ball deflects 30.0° from its original direction. What is the speed of the initially stationary billiard ball after the collision?

Answer 1

1.5

Answer 2

3sin(30)=1.5

Answer 3

This answer solved by ...mv-mvcos30

Answer 4

2.59