# Percentage of total beginning GPE converted to thermal/kinetic energy

1. Nov 12, 2009

1.
These are calculations for a roller coaster project where we had to find the height, GPE, velocity, KE, and total ME.
Question 1: what percentage of the total beginning GPE was converted to final kinetic energy?

Question 2: What percentage of the total beginning GPE was converted to thermal energy? (and what is thermal energy?)

I just need formulas, thanks.

2. Nov 13, 2009