Download App

Gravitation — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceGravitation1 Mark
MCQ
Two objects of different masses falling freely near the surface of moon would:
  • ✓
    Have same velocities at any instant.
  • B
    Have different accelerations.
  • C
    Experience forces of same magnitude.
  • D
    Undergo a change in their inertia.
✓

Answer

Correct option: A.
Have same velocities at any instant.
We know,
$v = u + at$
$\Rightarrow v = 0 + gt$
$[$Here, $g$ is acc. Due to gravity on moon$]$
Thus, the equation of velocity for a freely falling body is independent of the mass of the body.
So, different masses that are dropped simultaneously with the same or zero initial velocity will have same velocity at any instant.

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 "MCQ" from Gravitation→Gravitation — all question types→Science STD 9 question papers→Maharashtra Board STD 9 question papers→Maharashtra Board question paper generator→

Similar questions

A sprinter is running along the circumference of a big sports stadium with constant speed Which of following do you think is changing in this case?
→
The number of valence electrons in a graphite atom is:
→
The chemical which can be used to separate a mixture of carbon powder and sulphur powder successfully is:
→
Which one of the following does not consist of transverse waves?
→
At $20^\circ C,$ the minimum distance of a person from a sound reflecting surface to hear an echo is:
→
Which of the following could not be a unit of acceleration?
→
A girl is carrying a school bag of $3\ kg$ mass on her back and moves $200\ m$ on a levelled road. If the value of g be $10\ m/s^2$, the work done by the girl against the gravitational force will be:
→
The frequencies of four sound waves are given below. Which of these sound waves can be used to measure the depth of sea by the echo method?
→
How much energy does a $100W$ electric bulb transfer in $1$ minute?
→
Which of the following is the correct electronic configuration of sodium?
→