A body $A$ moves with a uniform acceleration $a$ and zero initial velocity. Another body $B$, starts from the same point moves in the same direction with a constant velocity $v$. The two bodies meet after a time $t$. The value of $t$ is
- A$\frac{{2v}}{a}$
- B$\frac{v}{a}$
- C$\frac{v}{{2a}}$
- D$\sqrt {\frac{v}{{2a}}} $
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