Newton's 2nd law problems

1.A ball rolls along a smooth horizontal floor at 10 m/s, then starts up a 20 degree ramp. Assume friction is negligible.

a. How high does it go before it starts rolling back down?

b. How long does it take the ball to go up and down the ramp?

2. Chapter 5, Problem 12

3. Suppose a cable was placed along the ceiling of one of the short walls for for mounting a very large white board. Dr. Saul decides to test it by hanging on it with one hand about 10 feet from one wall. As he hangs the rope is pulled down 1.5 m.

What is the tension force on each side of the cable?