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Friday, 9 October

JEE Main Physics · System of Particles and Rotational Motion

Collisions in JEE Main

Collisions (Physics, System of Particles and Rotational Motion) came 15 times in 14 of the 42 JEE Main shifts Lumi analysed, across 9 distinct ideas. 5 of them came in 2024–26; it was last asked in 2025.

Questions
15
in 14 shifts
Ideas asked
9
3 asked more than once
Numerical answer
2
13% of its questions
Pattern
Asked most years
last asked 2025
Questions each year
0240’174’203’212’221’234’241’250’26

In the shifts Lumi analysed for each year.

Difficulty and format
Easy 6Medium 9Hard 0

Format

  • Single correct12 Q
  • Numerical value2 Q
  • Diagram based1 Q
Ideas inside the topic
9 ideas
Where it sits

Part of System of Particles and Rotational Motion, which had 66 questions in all. Collisions accounts for 23% of them. In Lumi's JEE taxonomy it belongs to Mechanics.

Some questions sit in other chapters too: Laws of Motion, Motion in a Plane, Work, Energy and Power.

Every question

All 15 Collisions questions

Newest first, each with its options and official answer.

  1. 3 Apr 2025, Shift 2 · Q29Consider two blocks A and B of masses m1=10m_1 = 10 kg and m2=5m_2 = 5 kg that are placed on a frictionless table. The block A moves with a…MediumSingle correctHas a figure
  2. 8 Apr 2024, Shift 1 · Q33A stationary particle breaks into two parts of masses mAm_A and mBm_B which move with velocities vAv_A and vBv_B respectively. The ratio…EasySingle correct
  3. 8 Apr 2024, Shift 1 · Q34A player caught a cricket ball of mass 150 g moving at a speed of 20 m/s. If the catching process is completed in 0.1 s, the magnitude of…EasySingle correct
  4. 9 Apr 2024, Shift 2 · Q33A nucleus at rest disintegrates into two smaller nuclei with their masses in the ratio of 2:12:1. After disintegration they will move :EasySingle correct
  5. 31 Jan 2024, Shift 1 · Q35An artillery piece of mass M1M_1 fires a shell of mass M2M_2 horizontally. Instantaneously after the firing, the ratio of kinetic energy…EasySingle correct
  6. 8 Apr 2023, Shift 2 · Q40A bullet of mass 0.1 kg moving horizontally with speed 400 ms−1^{-1} hits a wooden block of mass 3.9 kg kept on a horizontal rough…MediumSingle correct
  7. 28 Jul 2022, Shift 1 · Q33In two different experiments, an object of mass 5 kg moving with a speed of 25 ms−125\ \mathrm{ms^{-1}} hits two different walls and comes to…EasySingle correct
  8. 29 Jun 2022, Shift 1 · Q32A body of mass M at rest explodes into three pieces, in the ratio of masses 1:1:21 : 1 : 2. Two smaller pieces fly off perpendicular to each…EasySingle correct
  9. 25 Jul 2021, Shift 1 · Q16Two billiard balls of equal mass 30 g strike a rigid wall with same speed of 108 kmph (as shown) but at different angles. If the balls get…MediumSingle correctHas a figure
  10. 16 Mar 2021, Shift 2 · Q14A large block of wood of mass M = 5.99 kg is hanging from two long massless cords. A bullet of mass m = 10 g is fired into the block and…MediumDiagram basedHas a figure
  11. 18 Mar 2021, Shift 1 · Q22A ball of mass 10 kg moving with a velocity 10310\sqrt{3} m/s along the xx-axis, hits another ball of mass 20 kg which is at rest. After…MediumNumerical valueHas a figure
  12. 8 Jan 2020, Shift 1 · Q22A body A, of mass m = 0.1 kg has an initial velocity of 3i^3\hat{i} ms−1^{-1}. It collides elastically with another body, B of the same…MediumNumerical value
  13. 9 Jan 2020, Shift 2 · Q4A particle of mass mm is projected with a speed uu from the ground at an angle θ=π3\theta = \frac{\pi}{3} w.r.t. horizontal (xx-axis).…MediumSingle correct
  14. 2 Sep 2020, Shift 1 · Q3A particle of mass mm with an initial velocity ui^u\hat{i} collides perfectly elastically with a mass 3m3m at rest. It moves with a…MediumSingle correct
  15. 6 Sep 2020, Shift 2 · Q4Particle A of mass m1m_1 moving with velocity (3i^+j^) ms−1\left(\sqrt{3}\hat{i}+\hat{j}\right)\,\mathrm{ms^{-1}} collides with another particle B of…MediumSingle correct