MCQ
Mars has about $\frac{1}{10}^\text{th}$ as much mass as the earth and half as great a diameter. The acceleration of a falling body on Mars is about:
- A$9.8\ ms^{-2}$
- B$1.96\ ms^{-2}$
- ✓$3.92\ ms^{-2}$
- D$4.9\ ms^{-2}$
✓
Answer
Correct option: C.
$3.92\ ms^{-2}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A metallic tape gives correct value at $25^{\circ} C$. A piece of wood is being measured by this metallic tape at $10^{\circ} C$. The reading is $30 \,cm$ on the tape, the real length of wooden piece must be .......... $cm$
→A train starting from rest first accelerates uniformly up to a speed of $80 \mathrm{~km} / \mathrm{h}$ for time $t$, then it moves with a constant speed for time 3t. The average speed of the train for this duration of journey will be (in $\mathrm{km} / \mathrm{h}$ ) :
→A particle is moving with a constant speed along a straight line path. A force is not required to
An elastic material of Young's modulus $Y$ is subjected to a stress $S$. The elastic energy stored per unit volume of the material is
→The wavelength is $120 cm$ when the source is stationary. If the source is moving with relative velocity of $60\, m/sec$ towards the observer, then the wavelength of the sound wave reaching to the observer will be ... $cm$ (velocity of sound $= 330 \,m/s$)
→The resistance $R =\frac{V}{I}$ where $V= 100 \pm 5 \,volts$ and $ I = 10 \pm 0.2$ amperes. What is the total error in $R$ ......... $\%$
→A truck is moving on the horizontal road with constant speed $v.$ A ball is thrown from the truck vertical up at speed $u$ $w.r.t.$ truck. What is distance traversed by the truck when ball returns on the truck
→Oxygen and hydrogen are at the same temperature $T.$ The ratio of the mean kinetic energy of oxygen molecules to that of the hydrogen molecules will be:
→In the following problems, indicate the correct direction of friction force acting on the cylinder, which is pulled on a rough surface by a constant force $F$. $A$ cylinder is placed on a rough plank which in turn is placed on a smooth surface. The plank is pulled with a constant force $F$. The friction force can be given by which of the following diagrams
→A massless platform is kept on a light elastic spring as shown in fig. When a sand particle of mass $0.1\; kg$ is dropped on the pan from a height of $0.24 \;m$, the particle strikes the pan and spring is compressed by $0.01\; m$.
→From what height should the particle be dropped to cause a compression of $0.04\; m$.