posted by Dani .
A ski jumper starts from rest 51.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0° above the horizontal and at a height of 12.0 m above the ground. Neglect air resistance.
(a) What is her speed when she leaves the track?
(b) What is the maximum altitude she attains after leaving the track?
(c) Where does she land relative to the end of the track?