Question

a 50 kg student who is late runs up two flights of stairs whose combined vertical height is 7.0 m in 10 s (and he then silently enters the classroom while the professor is writing on the chalkboard).Calculate the student's power output in doing work against gravity in a) watts, b) kilowatss, and c)horsepower

Answer 1

Power = M*g*H/time = 343 watts

You can surely convert that to kW

746 W = 1 hp. Do the conversion

Answer 2

In kilowatts and horsepower