physical science
posted by Liz .
A 136lb. student races up stairs with a vertical height of 4.8 m in 6.0 s to get to a class on the second floor. How much power in watts does the student expend in doing work against gravity?

physical science 
Steve
power = work/time
work = force * distance
136 lb * 4.448N/lb = 605N
605N * 4.8m / 6.0s = 484W
Respond to this Question
Similar Questions

8th grade
a student wo weighs 500 newtons climbed the stairs from the first floor to the third floor 15 meters above in 20 seconds A.how much work did she do? 
math
a student who weighs 500 newtons climbed the stairs frim the first fkoor to the third floor 15 meters above in 20 second How much work did she do? 
physics
In a time of 10s, a 70 kg student runs up 2 flights of stairs whose combined vertical height is 8.0m. compute the student's power output in doing work against gravity in (a)watts and (b)horsepower 
physics
A 680 newton student runs up a flight of stairs 3.5 m high in 11.4 seconds. The student takese 8.5 seconds to run up the same flight of stairs during a second trial. 1)Find the work done by the 680 N student in climbing the stairs … 
physics
A 60 kg student does 60 push ups in 40s . With each push up , the student must lift 70% of the body mass a height of 40cm off the floor. Assuming two significant digits, calculate the following The work the student does against a force … 
physics
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 … 
physics
A student, late for class, ran up some stairs between landings, which are 11.3 m apart. The studentâ€™s mass is 62 kg and it took 6.02 s to do the run. What is the average power that the student generated during the run? 
physics
A 145lb student races up stairs with a vertical height of 4.8 m in 5.5 s to get to a class on the second floor. How much power in watts does the student expend in doing work against gravity 
physics
A student in the fitness center lifts a weight with m = <81.5> kg from the floor to a height of <2.7> meters in a time of <15.50> seconds. Find the average power exerted by the student during this time. Give your … 
Physics
a . rather then taking the elevator a a 65kg student decided to climb 276m vertical height of stairs to the observation deck of the effiel tower. How much work does the student do against gravity climbing to this level?