power and velocity: power P = 0.015V3, velocity V

[lsniff]

Solve the problem.

The power P (in W) generated by a particular windmill is given by P = .015 V3 where V is the velocity of the wind (in mph). Find the instantaneous rate of change of power with respect to velocity when the velocity is 12.5 mph.

 

[skeeter]

Re: power and velocity

find P'(v), then evaluate P'(12.5)

... this should be in the calculus section.