Physics - Center of Mass Momentum and Collision
Practise 20 JEE Advanced previous year questions on Center of Mass Momentum and Collision, compiled from papers spanning 2006 to 2025. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty JEE Advanced tests.
Center of Mass Momentum and Collision has been asked in 10 of the 27 years of JEE Advanced papers analysed (2000–2026), with 20 questions in all. 20% of them were easy, 55% moderate and 25% tough. Most of its questions came from 2009, with 4 questions that year. In the last three years (2024–2026) it had 3 questions across 6 papers, about 0.5 per paper.
The chapter's 5 topics are not weighted equally: Collisions (11 questions, 55%), Motion of centre of mass (4 questions, 20%), and momentum (3 questions, 15%) have been asked the most. Collisions has also led over the last five years, with 2 questions. Collisions has produced the most tough questions (4).
- 1In a scattering experiment, a particle of mass collides with another particle of mass , which is initially at rest. Assuming the collision t2025 (Paper 1)Collisions
- 2Paragraph II: Two particles, 1 and 2 , each of mass , are connected by a massless spring, and are on a horizontal frictionless plane, as sho2024 (Paper 2)Motion of centre of mass
- 3Two particles, 1 and 2 , each of mass , are connected by a massless spring, and are on a horizontal frictionless plane, as shown in the figu2024 (Paper 2)Motion of centre of mass
- 4A bar of mass M = 1 . 00 kg and length L = 0 . 20 m is lying on a horizontal frictionless surface. One end of the bar is pivoted at a point 2023 (Paper 1)Collisions
- 5A block of mass M has a circular cut with a frictionless surface as shown. The block rests on the horizontal frictionless surface of a fixed2017 (Paper 1)Motion of centre of mass
- 6A flat plate is moving normal to its plane through a gas under the action of a constant force F. The gas is kept at a very low pressure. The2017 (Paper 1)momentum
- 7A ball of mass rests on a vertical post of height . A bullet of mass , travelling with a velocity in a horizontal direction, hits the centre2011 (Paper 2)Collisions
- 8A thin ring of mass and radius is rolling without slipping on a horizontal plane with velocity 1 . A small ball of mass , moving with veloci2011 (Paper 2)Impulse
- 9A point mass of collides elastically with a stationary point mass of . After their collision, the mass reverses its direction and moves with2010 (Paper 1)Collisions
- 10Look at the drawing given in the figure, which has been drawn with ink of uniform line-thickness. The mass of ink used to draw each of the t2009 (Paper 1)Centre of mass of discrete particles
- 11Two small particles of equal masses start moving in opposite directions from a point in a horizontal circular orbit. Their tangential veloci2009 (Paper 1)Collisions
- 12If the resultant of all the external forces acting on a system of particles is zero, then from an inertial frame, one can surely say that2009 (Paper 1)momentum
- 13Three objects and are kept in a straight line on a frictionless horizontal surface. These have masses and , respectively. The object moves t2009 (Paper 2)Collisions
- 14Two balls, having linear momenta and , undergo a collision in free space. There is no external force acting on the balls. Let and be their f2008 (Paper 1)momentum
- 15Paragraph: A small block of mass moves on a frictionless surface of an inclined plane, as shown in figure. The angle of the incline suddenly2008 (Paper 1)Collisions
- 16Paragraph: A small block of mass moves on a frictionless surface of an inclined plane, as shown in figure. The angle of the incline suddenly2008 (Paper 1)Collisions
- 17Paragraph: A small block of mass moves on a frictionless surface of an inclined plane, as shown in figure. The angle of the incline suddenly2008 (Paper 1)Collisions
- 18Statement I In an elastic collision between two bodies, the relative speed of the bodies after collision is equal to the relative speed befo2007 (Paper 1)Collisions
- 19Statement I If there is no external torque on a body about its centre of mass, then the velocity of the centre of mass remains constant. Sta2007 (Paper 2)Motion of centre of mass
- 20There is a rectangular plate of mass of dimensions . The plate is held in horizontal position by striking small balls each of mass per unit 2006Collisions
Frequently Asked Questions
1.How many questions are available for Center of Mass Momentum and Collision?
This chapter includes 20 questions compiled from JEE Advanced papers spanning 2006 to 2025.
2.Are these questions only from JEE Advanced, or from other exams too?
These are JEE Advanced 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 JEE Advanced Physics?
Center of Mass Momentum and Collision has appeared in 10 of the 21 years of JEE Advanced papers covered here, with 20 questions across 12 papers - about 2 per paper it appears in.
4.What is the difficulty level of Center of Mass Momentum and Collision questions in JEE Advanced?
Of the 20 questions analysed for this chapter, 20% are easy, 55% moderate and 25% tough. 2009 had the most, with 4 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:
- Collisions - 11 questions (55%)
- Motion of centre of mass - 4 questions (20%)
- momentum - 3 questions (15%)
- Collisions has produced the most tough questions (4).
6.Is Center of Mass Momentum and Collision's weightage in JEE Advanced going up or down?
Across all 12 papers analysed, Center of Mass Momentum and Collision has averaged about 1.7 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.5 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.