Question

Find the average power Pavg created by the force F in terms of the average speed vavg of the sled.

Answer 1

Complete Question

The complete question is shown on the first and second uploaded image

Answer:

The power created  is  $P_{avg} = F * v_{avg}$

Explanation:

From the question we are told that

    The that the average power is  mathematically represented as

            $P_{avg} = \frac{W }{\Delta t }$

Where W is  is the Workdone which is  mathematically represented as

         $W = F * s$

      Where F is  the applies force and  s  is the displacement  due to the force  

        So  

                $P_{avg} = \frac{F *s }{\Delta t }$

Now this  displacement can be represented mathematically as  

            $s = v_{avg} * \Delta t$

Where $v_{avg }$ is the average  velocity and $\Delta t$ is the time  taken  

So  

            $P_{avg} = \frac{F *v_{avg} * \Delta t }{\Delta t }$

=>         $P_{avg} = F * v_{avg}$