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

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Solution

The correct option is B
Acceleration produced in a body $a = \frac{v}{t_{1}}; W = \frac{1}{2} m a^{2} t^{2} = \frac{1}{2} \frac{m v^{2}}{t_{1}^{2}} t^{2}$

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