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Saturday, 31 October

JEE Main · Physics · Motion in a Straight Line

Free Fall Sign Conventions

JEE Main asked Free Fall Sign Conventions 10 times in 9 of the 108 shifts Lumi analysed, in 2017, 2020, 2022, 2023 and 2026. It belongs to Kinematics in 1D, in Motion in a Straight Line (Physics). The longest wait between two years asking it was 3 years, across 2018 and 2019, which Lumi has no shifts for. In 2020 and 2022 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
10
in 9 shifts
Years
5 of 8
First asked
2017
last in 2026
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2017, 2020, 2022, 2023 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.510.83’170.17’200’210.17’220.07’230’240’250.11’26

Raw count: 2017: 1 in 1 shift · 2020: 2 in 12 shifts · 2021: 0 in 24 shifts · 2022: 5 in 24 shifts · 2023: 1 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 1 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20261 of 9
  • 20250 of 8
  • 20240 of 18
  • 20231 of 12
  • 202224 of 24
  • 20210 of 24
  • 20202 of 12
  • 20171 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: calculation.

  • Height where speed equals g
  • Graph interpretation of vertical motion

Difficulty

Easy 5Medium 5Hard 0

5 of the 10 questions had a numerical answer.

Every question

All 10 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 5 Apr 2026, Shift 1 · Q47From 18 m height above the ground a ball is dropped from rest. The height above the ground at which the magnitude of velocity equal to the…MediumNumerical value
  2. 12 Apr 2023, Shift 1 · Q44A ball is thrown vertically upward with an initial velocity of 150 m/s. The ratio of velocity after 3 s and 5 s is x+1x\frac{x+1}{x}. The…EasySingle correct
  3. 27 Jun 2022, Shift 2 · Q33When a ball is dropped into a lake from a height 4.9 m above the water level, it hits the water with a velocity vv and then sinks to the…EasySingle correct
  4. 26 Jun 2022, Shift 1 · Q33An object is thrown vertically upwards. At its maximum height, which of the following quantity becomes zero ?EasySingle correct
  5. 26 Jun 2022, Shift 1 · Q52A ball of mass 0.5 kg is dropped from the height of 10 m. The height, at which the magnitude of velocity becomes equal to the magnitude of…EasyNumerical value
  6. 24 Jun 2022, Shift 1 · Q57From the top of a tower, a ball is thrown vertically upward which reaches the ground in 6 s. A second ball thrown vertically downward from…MediumNumerical value
  7. 28 Jul 2022, Shift 2 · Q21A ball is thrown vertically upwards with a velocity of 19.6 ms−119.6\ \mathrm{ms^{-1}} from the top of a tower. The ball strikes the ground after…MediumNumerical value
  8. 4 Sep 2020, Shift 1 · Q2A Tennis ball is released from a height h and after freely falling on a wooden floor it rebounds and reaches height h2\frac{h}{2}. The…MediumDiagram basedHas a figure
  9. 8 Jan 2020, Shift 2 · Q21A ball is dropped from the top of a 100 m100\ \mathrm{m} high tower on a planet. In the last 12\frac{1}{2} s before hitting the ground, it…MediumNumerical value
  10. 2 Apr 2017 (offline) · Q2A body is thrown vertically upwards. Which one of the following graphs correctly represent the velocity vs time ?EasySingle correctHas a figure

Shifts: 2 Apr 2017 (offline), 8 Jan 2020, Shift 2, 4 Sep 2020, Shift 1, 24 Jun 2022, Shift 1, 26 Jun 2022, Shift 1, 27 Jun 2022, Shift 2, 28 Jul 2022, Shift 2, 12 Apr 2023, Shift 1, 5 Apr 2026, Shift 1.

Same topic

Other ideas in Kinematics in 1D

Kinematics in 1D has 28 ideas JEE Main has asked; 17 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas