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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
If body having initial velocity zero is moving with uniform acceleration $8\,\,m/{\sec ^2}$ the distance travelled by it in fifth second will be.........$metres$
  • ✓
    $36$
  • B
    $40$
  • C
    $100$
  • D
    $0$
✓

Answer

Correct option: A.
$36$
a
(a) Distance travelled in ${n^{th}}$ second $ = u + \frac{a}{2}(2n - 1)$

Distance travelled in ${5^{th}}$ second

$ = 0 + \frac{8}{2}\left( {2 \times 5 - 1} \right)$

$=36\,m$

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