Solving for Ski Jumper Takeoff Speed: Using Energy and Motion Equations

[Confusedbiomedeng]

Homework Statement

consider a ski jumper moving down a track to acquire sufficient speed to accomplish the ski jumping task. The length of the track is L=25m and the track makes an angle of 45° with the horizontal
if the skier starts at the top of the track with zero initial speed , determine the take off speed of the skier at the bottom of the track using
i) the work-energy theorem
ii) the conservation of energy principle
iii) the equation of motion along with kinematic relationships
assume that the effects of friction and air resistance are negligible

i have no idea how to even start this problem so any help would be greatly appreciated

 

[BvU]

i have no idea how to even start this problem

Well, you could list a few relevant equations -- as is asked by one of the template parts you accidentally erased. And for us to be allowed to help you, an attempt from your side is required by the PF guidelines (part 3 of the template parts you accidentally erased)

However,

what do your notes (or textbook) have to say on the work energy theorem ?
what kind of energy is converted in what kind of energy if you start high up with speed 0 and leave with a lot of speed at the bottom ?
what equation is meant with the equation of motion ?