Question

A 650kg student climbs a set of stairs in a time of 4.0 seconds. The stairs are 5m high. Calculate the work done on the student.

A. 31,850 J
B. 318.50 J
C. 31,850W
D. 13,000 J

Calculate the power generated by the student in the question above.

A. 127,400 J
B. 7,962.5 J
C. 7,962.5W
D. 13,000W

How would the work done against gravity change if you ran up the stairs in 8seconds?

A. Double the amount of work
B. Reduce the amount of work by half
C. No change
D. Increase the amount of potential energy causing the work decrease

Answer 1

Answer:

for the last question answer is C.

I know how to do first two questions too but I'm too lazy to solve them