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Newton's Laws of Motion — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsNewton's Laws of Motion1 Mark
MCQ
A force vector applied on a mass is represented as $\vec{F}=6 \hat{i}-8 \hat{j}+10 \hat{k}$ and accelerates with $1 \ m / s ^2$. What will be the mass of the body
  • ✓
    $10 \sqrt{2} \ kg$
  • B
    $5\ kg$
  • C
    $10\  kg$
  • D
    $20 \ kg$
✓

Answer

Correct option: A.
$10 \sqrt{2} \ kg$
(a) $m=\frac{F}{a}=\frac{\sqrt{6^2+8^2+10^2}}{1}=\sqrt{200}=10 \sqrt{2} \mathrm{~kg}$

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