How Do You Calculate Power Output in Physics Problems?

[zjhcool]

Question: An 820-N Marine in basic training climbs a 12.0-m vertical rope at a constant speed in 8.00 s. What is his power output?

I know the formula for average power is equal to the (work/change in time)
The formula for work is equal to Force * distance?

I am extremely confused on how to solve this problem. I figured out that 820 N can be converted to 83.616729464 kg.

 

[rock.freak667]

Question: An 820-N Marine in basic training climbs a 12.0-m vertical rope at a constant speed in 8.00 s. What is his power output?

The force acting is just his weight. You know that work done is nothing but force*distance traveled, so what is the work done?

Then you know that power = work/time, and you have the work and they told you the time.