A particle of mass .m. is driven by a machine that delivers constant power .k. walts. 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