Question

A roller coaster car has a mass of 290. kilograms. Starting from rest, the car acquires
3.13 × 10^5 joules of kinetic energy as it descends to the bottom of a hill in 5.3 seconds.

Calculate the height of the hill. [Neglect friction.] [Show all work, including the equation and substitution
with units.]

Answer 1

Now I can actually edit my answer directly: I'm fairly sure I've got this wrong, and my mind has gone blank for how to do it, if someone could delete this that would be great and I'll think about it and see if I can figure it out!