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2. motion in straight line — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics2. motion in straight line1 Mark
MCQ
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
  • ✓
    $\frac{{2v}}{a}$
  • B
    $\frac{v}{a}$
  • C
    $\frac{v}{{2a}}$
  • D
    $\sqrt {\frac{v}{{2a}}} $
✓

Answer

Correct option: A.
$\frac{{2v}}{a}$
a
(a)$\frac{1}{2}a{t^2} = vt \Rightarrow t = \frac{{2v}}{a}$

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