being late for class, a 75 kg student ran up a 10 m flight of stairs in a time of 8 s.
was the change in the student's potential energy?
b) How much work did the student do?
c) What was the power of the student?
d) Suppose when the student reached the top they slipped and fell all the way back down. If there was no friction, how fast was the student moving the instant they hit the bottom