JEE Main 2021 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 3 August 2021, Shift 1, Physics Q3

Question 3 of 90 in this shift, Physics question 3 of 30, Section A.

A body moving with an initial velocity of 10

m/s

, maintains a constant acceleration for 20

s

. If it covers a distance of 88

m

in its last second, what is its acceleration ?

(1) $3\ m/s^2$
(2) $4\ m/s^2$ Official answer
(3) $2\ m/s^2$
(4) $0.5\ m/s^2$

Official answer

Option 2

NTA final key.

Chapter: Motion in a Straight Line
Topic: Kinematics in 1D
Idea tested: Displacement in the nth Second

Same idea in other shifts

Asked 6× in all

8 Apr 2026, Shift 2 · Q50Two masses of 3.4 kg and 2.5 kg are accelerated from an initial speed of 5 m/s and 12 m/s, respectively. The distances traversed by the…MediumNumerical value
4 Apr 2024, Shift 1 · Q34A body travels 102.5 m in n $^{th}$ second and 115.0 m in (n + 2) $^{th}$ second. The acceleration is :EasySingle correct
5 Apr 2024, Shift 1 · Q51A body moves on a frictionless plane starting from rest. If $S_n$ is distance moved between $t=n-1$ and $t=n$ and $S_{n-1}$ is distance…EasyNumerical value
30 Jan 2024, Shift 1 · Q51The displacement and the increase in the velocity of a moving particle in the time interval of t to $(t+1)$ s are 125 m and 50 m/s,…MediumNumerical value
24 Jun 2022, Shift 2 · Q43A fly wheel is accelerated uniformly from rest and rotates through 5 rad in the first second. The angle rotated by the fly wheel in the…EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.