A body of mass `m` is acceleratad uniformaly from rest to a speed `v` in a time `T` . The instanseous power delivered to the body as a function of time is given by

Options

A. `(mv^(2))/(T^(2)) t^(2) `
B. `(mv^(2))/(T^(2)) t( c)`
C. `(1)/(2) (mv^(2))/(T^(2)) t^(2) `
D. `(1)/(2)(mv^(2))/(T^(2)) t^(2) `

Answer

B

Explanation

(b) `u = 0 , nu = u + aT, nu = aT`
Instantaneous power ` = F xx nu = m, a , at = m, a^(2) , t`
:. Instantaneous power `= m(nu ^(2))/(T^(2)) t `