Saturday

August 30, 2014

August 30, 2014

Posted by **Leannna** on Sunday, January 23, 2011 at 8:48pm.

a) Find W'(20). Using the correct units, explain the meaning of W'(20) in terms of wind chill.

I got W'(20)=-.2855 but don't know what that means.

b) Find the average rate of change of W over the interval 5 is < or = v which is < or = 60. Find the value of v at which the instantaneous rate of change of W is equal to the average rate of change of W over the interval 5 is < or = v which is < or = 60.

I got the average rate of change as -.2538 but i don't know how to do the instantaneous rate of change.

c) Over the time interval O is < or = to t which is < or = to 4 hours, the air temperatures is a constant 32degrees Fahrenheit. At time t=0, the wind velocity is v=20mph. if the wind velocity increases at a constant rate of 5mph per hour, what is the rate of change of the wind chill with respect to time at t=3 hours? Indicate units of measure.

All I know is that you have to do the derivative but i don't know about c.

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