A particle of mass `m` is driven by a machine that delivers a constant power `k` watts. If the particle starts from rest the force on the particle at time `t` is

Options

A. `sqrt(2mk)t^(-1//2)`
B. `sqrt(mk)t^(-1//2)`
C. `sqrt((mk)/(2))t^(-1//2)`
D. `(1)/(2)sqrt(mk)t^(1//2)`

Answer

C