Questions:

A group of students performed this lab and generated this graph of energy lost vs$,$ distance.

The group then repeats the lab, with a material with a smaller coefficient of friction. On the graph above, draw in RED a line that would be generated in this case. Explain your answer.

Once again, they return to the original experiment but set the ramp at a smaller angle. On the graph above, draw in GREEN a line that would be generated in this case. Explain your answer.

Can you also explain how a Energy Lost vs Distance Traveled graph gets coefficient of friction?