A billiard ball with speed of 8.0 m/s in the positive x direction hits elastically an identical second billiard ball that is at rest at the origin,After the collision one of the balls has a momentum with an angle of-25 degrees respect to the positive x axis. The direction of themomentum of the second ball in degrees is;

QUESTION 10 Shawn (in - 49 0 keg)rides his skateboard at a local skate park. He starts from rest at the top of the track as seen in the figure below (view file in Course Content) and begins a descent down the track, always maintaining contact with the surface. The mass of the skateboard is negligible, as is fuction creept where noted. What is his speed when he reaches the bottom (the end of the 18.0-m length of track)