MCQ
A parachutist after bailing out falls 50m without friction. When parachute opens, it decelerate at 2m/ s2. He reaches the ground with a speed of 3m/ s. At what height, did he bail out nearly.
- A298m
- B111m
- C91m
- D182m
✓
Answer
- 298m
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
For the resultant of the two vectors to be maximum, what must be the angle between them....... $^o$
→On decreasing the temperature, surface tension:
From Newton's second law of motion, it can be inferred that
When three forces of $50 \,N, 30\, N $ and $15\,N$ act on a body, then the body is
→ Consider a water jar of radius $R$ that has water filled up to height $H$ and is kept on a stand of height $h$ (see figure) . Through a hole of radius $r$ $(r << R)$ at its bottom, the water leaks out and the stream of water coming down towards the ground has a shape like a funnel as shown in the figure. If the radius of the cross-section of water stream when it hits the ground is $x.$ Then
→An electron is moving in a circle of radius $2 \,m$ with speed $4 \,m / s$ Find the acceleration of the electron. (in $m / s ^{2}$)
→In following figures $(a)$ to $(d)$, variation of volume by change of pressure is shown in figure. The gas is taken along the path $A B C D A$. Change in internal energy of the gas will be .......
→If $g \propto \frac{1}{{{R^3}}}$ (instead of $\frac{1}{{{R^2}}}),$ then the relation between time period of a satellite near earth's surface and radius $R$ will be
→A thin rod of mass $m$ and length $l$ is oscillating about horizontal axis through its one end. Its maximum angular speed is $\omega$. Its centre of mass will rise upto maximum height :-
→Asseretion $A:$ If in five complete rotations of the circular scale, the distance travelled on main scale of the screw gauge is $5\, {mm}$ and there are $50$ total divisions on circular scale, then least count is $0.001\, {cm}$.
→Reason $R:$ Least Count $=\frac{\text { Pitch }}{\text { Total divisions on circular scale }}$
In the light of the above statements, choose the most appropriate answer from the options given below: