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
At a place where the acceleration due to gravity is $10\,m\,{\sec ^{ - 2}}$ a force of $5\, kg-wt$ acts on a body of mass $10\, kg$ initially at rest. The velocity of the body after $4$ second is .......... $m/\sec^{-1}$
  • A
    $5$
  • B
    $10$
  • ✓
    $20$
  • D
    $50$
✓

Answer

Correct option: C.
$20$
c
(c) Acceleration $ = \frac{{{\rm{Force}}}}{{{\rm{Mass}}}} = \frac{{50\;N}}{{10\;kg}} = 5\;m/{s^2}$

From $v = u + at = 0 + 5 \times 4 = 20\;m/s$

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

A string is stretched between fixed points separated by $75.0\ cm$. It is observed to have resonant frequencies of $420\ Hz$ and $315\ Hz.$ There are no other resonant frequencies between these two. Then, the lowest resonant frequency for this string is  .... $Hz$
→
Statement$-1$ : Real gas approaches ideal gas behaviour for low pressures and high temperatures.
statement$-2 $: At low pressure, density of gas is very low.
→
Strongest attractive force in nature is:
→
If the body is moving in a circle of radius $ r$ with a constant speed $v$, its angular velocity is
→
A body of mass $3\, kg$ is under a force, which causes a displacement in it is given by $S = \frac{{{t^3}}}{3}$ (in $m$). Find the work done by the force in first $2 seconds$ ............ $\mathrm{J}$
→
Three objects of same mass but different geometries, capable of rotating have radius of gyration as $0.2, 0.5$ and $0.7.$ A torque is applied to these objects when they are rotating with constant angular velocity. Which object will have a larger response time for showing the change in their angular velocity:
→
A body has its centre of mass at the origin. the $x-$coordinates of the particles:
  1. May be all positive.
  2. May be all negative.
  3. May be all non$-$negative.
  4. May be positive for some cases and negative in other cases.
→
Two balls in free space are colliding with each other. Which of the following statement regarding linear momentum conservation of the system is true ?
→
The force of gravitation is
→
A body is thrown up in a lift with a velocity $u$ relative to the lift and the time of flight is found to be $ t.$ The acceleration with which the lift is moving up is
→