Download App

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

Gujarat BoardEnglish MediumSTD 11 SciencePhysics4.1 , newtons 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
    $2\sqrt {10} \,kg$
  • C
    $10 \,kg$
  • D
    $20\, kg$
✓

Answer

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

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 4.1 , newtons laws of motion→4.1 , newtons laws of motion — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The velocity of sound is $v_s$ in air. If the density of air is increased to $4$ times, then the new velocity of sound will be
→
A solid sphere is rolling down an inclined plane. Then the ratio of its translational kinetic energy to its rotational kinetic energy is
→
The orbital speed of a satellite revolving around a planet in a circular orbit is $v_0$. If its speed is increased by $10 \%$, then ..........
→
What is the mass of $22.4L$ of $CO_2$ at $\text{STP}?$
→
Latent heat of ice is:
→
Which one of the following graphs represents the behavior of an ideal gas?
→
A body of mass $2\, kg$ travels according to law $x = at + bt^2 + ct^3$, where $a = 3\, m/s$, $b = 4\,m/s^2$ and $c = 5\, m/s^3$, then force acting on body at $t = 2\, s$  ......... $N$.
→
A body of weight 72 N moves from the surface of earth at a height half of the radius of earth, then gravitational force exerted on it will be:
→
A block of volume $V$ and of density $\sigma _b$ is placed in liquid of density $\sigma _l(\sigma _l > \sigma _b)$ , then block is moved upward upto a height $h$ and it is still in liquid. The increase in gravitational potential energy of the system is
→
A car travels a distance $S$ on a straight road in two hours and then returns to the starting point in the next three hours. Its average velocity is
→