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4.1 , newtons laws of motion — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics4.1 , newtons laws of motion1 Mark
MCQ
A body is accelerated by applying a force of $30\,N$. The change in the momentum of the body after $2\,sec$ is ............ $kg-m/s$ 
  • A
    $7.5$
  • B
    $30 $
  • C
    $120$
  • ✓
    $60 $
✓

Answer

Correct option: D.
$60 $
d
$\Delta \mathrm{P}=\mathrm{F} \Delta \mathrm{t}=30 \times 2=60 \mathrm{\,kg} \mathrm{m} / \mathrm{s}$

Hence

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