The physics teachers stand on top of Mount Mean - their favorite place to ski. Their elevation is 200.m above ground level. Each teacher has a mass of 60.0 Kg.
A) What kind of mechanical energy do they have at the top of the mountain?
B) They start to ski down the hill. What will be the speed of one teacher at 80.0 m above the ground? Assume no friction.
C) If there was friction, how would this affect their speed?
D) Assuming that they run into a phone line at the bottom of the hill (no friction) and stretch it to its maximum. What distance would they stretch the line? The wire has a spring constant of 30.0 N/m. E) Solve for the work done by friction if the teacher is only going 30.0 m/s at a height of 80.0m.