An unruly demonstrator lift a stone of mass `m` kg from the ground and throws it at this opponent. At the time of projection, the stone is at height `h` meter above the ground and has a speed of `v(m)//(s)` what horse power does he use?

Options

A. `(1)/(2)(mv^2)/(746)`
B. `(mgh)/(746)`
C. `((1)/(2)mv^2+mgh)/(746)`
D. `((1)/(2)mv^2-mgh)/(746)`

Answer

C

Explanation

`hp=(mgh+(1)/(2)mv^2)/(746)`