Question

as the coaster gets going the hills keep getting smaller and smaller. if energy is conserved we should be able to obtain the same height of hill each time. however, we know that we are not. what is happening to the energy? *hint remember to consider the effect of the wheels rubbing on the track. type your answer here

Explanation:

Energy conservation assumes no non - conservative forces. But in reality, when the coaster's wheels rub on the track, there is friction (a non - conservative force). Friction converts some of the coaster's mechanical energy (potential + kinetic) into thermal energy (heat). So, the total mechanical energy available to reach the same height of the hill decreases each time.

Answer:

Some of the coaster's energy is being converted into thermal energy due to friction between the wheels and the track.