A pool player is attempting a fancy shot. He hits the cue ball ...

[rayancarla1]

A pool player is attempting a fancy shot. He hits the cue ball giving it a speed of 5.57 m/s and directs its center on a path tangent to the surface of the target ball having the same mass as the cue ball.
 
  After the collision (on a frictionless table) the initially-stationary ball moves with a speed of 4.82 m/s. After the collision, the new speed of the cue ball and the relative direction of the balls are closest to A) 2.79 m/s, at 90 to each other.
  B) 2.79 m/s, at 60 to each other.
  C) 8.34 m/s, at 90 to each other.
  D) 8.34 m/s, at 60 to each other.

Question 2

In both fission of uranium and fusion of hydrogen, mass
 
  A) decreases.
  B) remains constant.
  C) increases.

[makaylafy]

Answer to Question 1

A

Answer to Question 2

Answer: A

[rayancarla1]

Thanks

[makaylafy]

Welcome