Average power during Reginald Esuke's 62.25 minute mountain descent

[bamfazoid]

reginald esuke from cameroon ran down a mountain slope from an elevation of 4095m to one of 915m in just 62.25min. if esukes mass was 70.0kg, what was the average power during his descent?

 

[radou]

Any thoughts, ideas? How is power related to work?

 

[bamfazoid]

P=W/change in time
but how do i find the work?

 

[radou]

What is the definition of work?

 

[bamfazoid]

work is a force acting over a distance. is the force gravity?

 

[radou]

Yes. The work done equals the change in gravitational potential energy (i.e. the difference).

 

[bamfazoid]

alright thanks