Question

A body of mass m is accelerated to velocity v in time $t_1$. The work done by the force as a function of time t will be

• A. $\frac{m{v}^2{t}^2}{2e^2}$
• B. $\frac{m{v}^2{t}^2}{2t_1^2}$
• C. $\frac{mv}{2t}{t}^2$
• D. $\frac{mv{t}^2}{2t}$

Answer 1

The correct option is B $\frac{m{v}^2{t}^2}{2t_1^2}$

Acceleration produced in a body $a=\frac{v}{t_1};W=\frac{1}{2}m{a}^2{t}^2=\frac{1}{2}\frac{m{v}^2}{t_1^2}{t}^2$