Question

A force 'F' accelerated a block of mass 'm' along a straight line to velocity 'v' from rest and displace it through a distance 's'. What is the average power developed?

Answer 1

Power P = F * v
Here average velocity is (0+v)/2 = v/2
Hence average power = F * v/2

Answer 2

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The power
P= F×v

So, Average velocity is
$\frac{(0 + v)}{2} \\=v/2$

Now, Average power
$= f \times \frac{v}{2}$

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