posted by nicole .
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
Power = M*g*H/time = 343 watts
You can surely convert that to kW
746 W = 1 hp. Do the conversion