Kinematics 1D- JEE Main Previous Year Questions with Solutions
JEE Main Previous Year Question of Physics with Solutions are available here. Practicing JEE Main Previous Year Papers Questions of Physics will help all the JEE aspirants in realizing the question pattern as well as help in analyzing their weak & strong areas. Get detailed Class 11th &12th Physics Notes to prepare for Boards as well as competitive exams like IIT JEE, NEET etc. eSaral helps the students in clearing and understanding each topic in a better way. eSaral is providing complete chapter-wise notes of Class 11th and 12th both for all subjects. Besides this, eSaral also offers NCERT Solutions, Previous year questions for JEE Main and Advance, Practice questions, Test Series for JEE Main, JEE Advanced and NEET, Important questions of Physics, Chemistry, Math, and Biology and many more. Download eSaral app for free study material and video tutorials.   Simulator Previous Years AIEEE/JEE Mains Questions
Q. A particle has an initial velocity of $3 \hat{i}+4 \hat{j}$ and an acceleration of $0.4 \hat{\mathrm{i}}+0.3 \hat{\mathrm{j}}$. Its speed after 10s is :- (1) 7 units (2) 8.5 units (3) 10 units (4) $7 \sqrt{2}$ units [AIEEE-2009]

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Sol. (4) v = u + at u = 3i + 4j + (0.4 i + 0.3 j) × 10 = 3i + 4j + 4i + 3i u = 7i + 7j $|\overrightarrow{\mathrm{u}}|=\sqrt{7^{2}+7^{2}}$ $=7 \sqrt{2}$

Q. An object, moving with a speed of 6.25 m/s, is decelerated at a rate given by $\frac{\mathrm{dv}}{\mathrm{dt}}=-2.5 \sqrt{\mathrm{v}}$ where v is the instantaneous speed. The time taken by the object, to come to rest, would be :- (1) 4 s (2) 8 s (3) 1 s (4) 2 s [AIEEE-2011]

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Sol. (4) $\overrightarrow{\mathrm{a}}=\frac{\mathrm{d} \mathrm{v}}{\mathrm{dt}}$ $\frac{\mathrm{d} \mathrm{v}}{\mathrm{dt}}=-2.5 \sqrt{\mathrm{v}}$ $\int \mathrm{d} \mathrm{v} \times \mathrm{v}^{-1 / 2}=\int-2.5 \mathrm{dt}$ $\frac{\mathrm{v}^{\frac{1}{2}}}{\frac{1}{2}}=-2.5 \mathrm{t}$ $2 \sqrt{\mathrm{v}}=-2.5 \mathrm{t}+\mathrm{c}$ $2 \sqrt{6.25}=-2.5 \mathrm{t}+\mathrm{c}$ 2 × 0.25 = c 5 = c $2 \sqrt{\mathrm{v}}=-\mathrm{kt}+5$ 0 = –kt + 5 kt = 5 $\mathrm{t}=\frac{5 \mathrm{sec}}{2.5}=2 \mathrm{sec}$

Q. From a tower of height H, a particle is thrown vertically upwards with a speed u. The time taken by the particle, to hit the ground, is n times that taken by it to reach the highest point of its path. The relation between H, u and n is : (1) $2 \mathrm{g} \mathrm{H}=\mathrm{nu}^{2}(\mathrm{n}-2)$ (2) $\mathrm{g} \mathrm{H}=(\mathrm{n}-2) \mathrm{u}^{2}$ (3) $2 \mathrm{g} \mathrm{H}=\mathrm{n}^{2} \mathrm{u}^{2}$ (4) $\mathrm{g} \mathrm{H}=(\mathrm{n}-2)^{2} \mathrm{u}^{2}$ [JEE-MAIN-2014]

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Sol. (1) Time to reach highest point $=\mathrm{t}=\frac{\mathrm{u}}{\mathrm{g}}$ time to reach ground = nt $\mathrm{S}=\mathrm{ut}+\frac{1}{2} \mathrm{at}^{2}$ $-\mathrm{H}=\mathrm{u}(\mathrm{nt})-\frac{1}{2} \mathrm{g}(\mathrm{nt})^{2}$ $\Rightarrow 2 \mathrm{gH}=\mathrm{nu}^{2}(\mathrm{n}-2)$

Q. A body is thrown vertically upwards. Which one of the following graphs correctly represent the velocity vs time ? [JEE Mains – 2017]

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Sol. (1) Velocity at any time t is given by v = u + at v = v0 + (–g)t $\mathrm{v}=\mathrm{v}_{0}-\mathrm{gt}$ $\Rightarrow$ straight line with negative slope

Q. All the graphs below are intended to represent the same motion. One of them does it incorrectly. Pick it up. [JEE Mains – 2018]

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Sol. (1) In this question option (2) and (4) are the corresponding position – time graph and velocity –position graph of option (3) and its distance – time graph is given as Hence incorrect graph is option (1)

• September 24, 2021 at 9:03 am

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• May 15, 2021 at 11:33 pm

PLS ADD MORE QUESTIONS , ELSE PLS DIE
You miss 100% of the shots you don’t take.” – …
“Whether you think you can or you think you can’t, you’re right.” – …
“I have learned over the years that when one’s mind is made up, this diminishes fear.” – …
“I alone cannot change the world, but I can cast a stone across the water to create many ripples.” –

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• August 11, 2021 at 3:21 pm

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• June 1, 2021 at 5:35 pm

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20
• March 15, 2021 at 9:32 am

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• March 2, 2021 at 7:24 pm

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• February 17, 2021 at 2:20 pm

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i really need of more privious questions

16
• May 15, 2021 at 3:25 pm

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• October 9, 2021 at 7:26 am

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• December 2, 2020 at 10:03 am

Yes

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• November 28, 2020 at 6:09 pm

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• November 2, 2020 at 10:18 pm

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• October 18, 2020 at 4:17 pm

more and harder questions please but good

11
• November 2, 2020 at 10:17 pm

Yes, indeed. These questions are way too easy! A better set of questions would do the trick.

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• October 10, 2020 at 6:47 am

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• December 2, 2020 at 10:03 am

Yes

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• October 2, 2020 at 8:44 am

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• September 27, 2020 at 11:06 pm

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• September 14, 2020 at 8:36 am

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1
• September 1, 2020 at 8:05 am

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1
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• August 31, 2020 at 10:56 am

I want more queries

7
• August 30, 2020 at 12:07 am

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15
• August 30, 2020 at 12:06 am

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0
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good questions

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• August 16, 2020 at 11:30 am

tthnk you but just 5 questions!!!!

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too less questions

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• August 9, 2020 at 10:56 am

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• August 7, 2020 at 9:50 am

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• October 15, 2020 at 10:31 am

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• August 2, 2020 at 4:08 pm

Nice

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• August 2, 2020 at 1:49 pm

Good but questions are less

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• July 26, 2020 at 10:26 pm

For practice

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• July 26, 2020 at 2:56 pm

fine but very less questions

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Xe

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• July 14, 2020 at 8:26 am

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so less questions

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• July 4, 2020 at 8:49 pm

Very less questions

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• July 2, 2020 at 9:50 pm

Thank you for providing such a good questions
Please can you make a pdf of it.

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• June 30, 2020 at 1:09 am

great effort

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• June 22, 2020 at 3:14 pm

Best

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• January 20, 2021 at 2:54 pm

Yes

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• June 18, 2020 at 1:40 pm

SUPER

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• June 16, 2020 at 10:30 am

too few questions

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• June 14, 2020 at 12:43 pm

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• May 27, 2020 at 10:10 am

Plz give more questions.

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• May 27, 2020 at 8:23 am

Can’t u give more questions?

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• May 24, 2020 at 4:48 pm

Good job

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• May 20, 2020 at 8:40 pm

Plz give more questions..

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• May 1, 2020 at 11:09 pm

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• April 14, 2020 at 2:45 pm

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• April 8, 2020 at 11:36 am

Good question

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• March 29, 2020 at 3:34 pm

In This there are less Qestions

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• December 19, 2019 at 11:15 pm

Nice

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