# What is the maximum height h of his jump above the end of the ramp

1. May 9, 2010

### nmegabyte

A 48 kg skier starts from rest at a height of H = 28 m above the end of the ski-jump ramp. As the skier leaves the ramp, his velocity makes an angle of 28° with the horizontal. Neglect the effects of air resistance and assume the ramp is frictionless.
Could u give me a formula i need to start with cuz i have no idea about the formula.

2. May 9, 2010

### ben133

Split the velocity into its vertical and horizontal components. Then just calculate how long until the vertical component equals zero, this will be the time equivalent to the maximum height before the skier starts to descend again. You should have learnt the equations of motion, and the equations for potential and kinetic energy, that's about all you'll need.