A particle of mass $m$ at rest is acted upon by a force $F$ for a time $t$. Its Kinetic energy after an interval $t$ is
A particle of mass $m$ at rest is acted upon by a force $F$ for a time $t$. Its Kinetic energy after an interval $t$ is
- A
$\frac{{{F^2}{t^2}}}{m}$
- B
$\frac{{{F^2}{t^2}}}{{2m}}$
- C
$\frac{{{F^2}{t^2}}}{{3m}}$
- D
$\frac{{F\,t}}{{2m}}$
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