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Physics - Center of Mass Momentum and Collision

Practise 33 COMEDK previous year questions on Center of Mass Momentum and Collision, compiled from papers spanning 2013 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty COMEDK tests.

Center of Mass Momentum and Collision has been asked in 11 of the 15 years of COMEDK papers analysed (2012–2026), with 33 questions in all. 61% of them were easy, 36% moderate and 3% tough. Most of its questions came from 2025, with 8 questions that year. In the last three years (2024–2026) it had 11 questions across 6 papers, about 1.8 per paper.

The chapter's 5 topics are not weighted equally: momentum (17 questions, 52%), Centre of mass of discrete particles (8 questions, 24%), and Collisions (5 questions, 15%) have been asked the most. momentum has also led over the last five years, with 6 questions. Centre of mass of continuous mass distribution has produced the most tough questions (1).

  1. 1A machine gun fires a bullet of mass m with a velocity of 1000 m/min. The man holding the gun can exert a force of 200 N on the gun. The pro09 May, 2026 (S1)momentum
  2. 2A bullet of 0.02 kg moving with a speed of hits a surface and comes to rest in 0.1 s What is the magnitude of the impulse of the force?25 May, 2025 (Shift)Impulse
  3. 3From a circular disc of radius 2 R , a smaller circular disc is cut with radius of the larger disc as its diameter. The centre of the hole i10 May, 2025 (S1)Centre of mass of continuous mass distribution
  4. 4A bomb of mass 20 kg at rest explodes into two pieces of masses 12 kg and 8 kg . If the velocity of 8 kg mass is , then the kinetic energy o10 May, 2025 (S1)momentum
  5. 5A bullet of momentum is fired into a door and gets embedded exactly at the center of the door. The door is 1.0 m wide and weighs 12 kg . It 10 May, 2025 (S2)Collisions
  6. 6The separation between C and O atoms in CO is 0.12 nm . The distance of C atom from the centre of mass is10 May, 2025 (S2)Centre of mass of discrete particles
  7. 7Select the correct statement from the following: The position of the centre of mass of a system:10 May, 2025 (S3)Centre of mass of discrete particles
  8. 8The velocity - mass graph of body with constant linear momentum is represented by the graph:10 May, 2025 (S3)momentum
  9. 9Momentum of a body is increased to three times its original value. By what percentage will its kinetic energy change?10 May, 2025 (S3)momentum
  10. 10Which of the following statement is true regarding the centre of mass of a system?2024 (Morning Shift)Centre of mass of discrete particles
  11. 11Which of the following graph shows the variation of velocity with mass for the constant momentum?2024 (Morning Shift)momentum
  12. 12A neutron makes a head on elastic collision with a lead nucleus. The ratio of nuclear mass to neutron mass is 206 . The fractional change in2023 (Evening Shift)Collisions
  13. 13In the diagram shown below, and are the masses of two particles and and are their respective distances from the origin . The centre of mass 2023 (Memory Based)Centre of mass of discrete particles
  14. 14In the diagram shown below, and are the masses of two particles and and are their respective distances from the origin . The centre of mass 2023 (Morning Shift)Centre of mass of discrete particles
  15. 15In the figure, pendulum bob on left side is pulled a side to a height from its initial position. After it is released it collides with the r2023 (Morning Shift)Collisions
  16. 16If kinetic energy of a body is increased by , then percentage change in momentum will be2022momentum
  17. 17A bullet of mass hits a mass and gets embedded in it. If the block rises to a height as a result of this collision, the velocity of the bull2022Collisions
  18. 18From a circular disc of radius , a square is cut out with a radius as its diagonal. The centre of mass of remaining portion is at a distance2022Centre of mass of continuous mass distribution
  19. 19Centre of mass of the given system of particles will be at2021Centre of mass of discrete particles
  20. 20Newton's second law of rotational motion of a system particles having angular momentum is given by2021momentum
  21. 21Two masses of and are moving with equal kinetic energy. The ratio of magnitude of their momentum is2021momentum
  22. 22When two bodies collide with each other such that their kinetic energy remains constant. Their collision is said to be2021momentum
  23. 23A body of mass is moving horizontally with a velocity . A mass of is added. Find the final velocity.2020momentum
  24. 24Two bodies of masses and have equal momentum. Then, the ratio of their kinetic energies is2019momentum
  25. 25If the surface is a perfect reflector, then the change in momentum of the wave after falling on the surface is2015momentum
  26. 26A bomb of mass at rest explodes into two pieces of masses and . The velocity of mass is . The kinetic energy of the other mass is2015momentum
  27. 27Which of the following statements is not correct regarding conservation laws?2014momentum
  28. 28The centre of mass of a system of two bodies of masses and , separated by a distance is2014Centre of mass of discrete particles
  29. 29In an inelastic collision, which of the following is true?2014Collisions
  30. 30A tennis ball of mass strikes a wall with a velocity and retraces the same path. Calculate the change in momentum.2014momentum
  31. 31A shell of mass is fired by a gun of mass . If the shell leaves the gun with a speed of , then the speed of recoil of the gun is2014momentum
  32. 32For a polar molecule, which of the following statements is true?2014Centre of mass of discrete particles
  33. 33Two bodies of masses and have equal momentum, then the ratio of their kinetic energies is2013momentum

Frequently Asked Questions

1.How many questions are available for Center of Mass Momentum and Collision?

This chapter includes 33 questions compiled from COMEDK papers spanning 2013 to 2026.

2.Are these questions only from COMEDK, or from other exams too?

These are COMEDK questions specifically for the Center of Mass Momentum and Collision chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Center of Mass Momentum and Collision an important chapter for COMEDK Physics?

Center of Mass Momentum and Collision has appeared in 11 of the 15 years of COMEDK papers covered here, with 33 questions across 16 papers - about 2 per paper it appears in.

4.What is the difficulty level of Center of Mass Momentum and Collision questions in COMEDK?

Of the 33 questions analysed for this chapter, 61% are easy, 36% moderate and 3% tough. 2025 had the most, with 8 questions.

5.Which topics in Center of Mass Momentum and Collision should I focus on?

These topics have carried the most weightage in Center of Mass Momentum and Collision:

  • momentum - 17 questions (52%)
  • Centre of mass of discrete particles - 8 questions (24%)
  • Collisions - 5 questions (15%)
  • Centre of mass of continuous mass distribution has produced the most tough questions (1).
6.Is Center of Mass Momentum and Collision's weightage in COMEDK going up or down?

Across all 16 papers analysed, Center of Mass Momentum and Collision has averaged about 2.1 questions per paper. In the last three years (2024–2026), that average has stayed about the same, at about 1.8 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.