1. A professional skier reaches a speed of 56m/s on a 30 degrees ski slope. Ignoring friction, what is the minimum distance along the slope the skier would have had to travel, starting from rest?
2- A 2.00 kg ball has zero kinetic and potential energy. Ernie drop the balls into a 100m deep. Just before the ball hit the bottom, the sum of its kinetic and potential and kinetic Energy