A skier swoops down a hill and over a ramp. She starts from rest at a height of 18m, leaves the ramp at an angle of 45 degrees, and just clears the snowman on her way down, making an angle of 30 degrees with the vertical as she does. Assuming that there is no friction, and that she is small compared to the dimensions of the problem, solve for the height of the snowman in meters.
WORK
So I was thinking you need to do:
Total Energy Before = Total Energy After
Eg= Ek' + mgh'
But I don't know how you can solve for the height of the ramp.... :/