A 1500kg roller coaster is at the top of a track. It goes down a 50 degree incline a distance of 50m.

a.
Pick the reference point of Potential energy as the bottom of the incline and find the potential energy at the bottom, the top and the difference between the two.
b.
Pick the reference point of Potential energy as the top of the incline and find the potential energy at the bottom, the top, and the energy differece beween the two.




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