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Elastic Collisions in One Dimension for JEE: 16 solved questions

Real JEE paper questions on elastic collisions in one dimension, part of work, energy and power. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2015 to 2025. No sign-in needed to read them.

What this topic asks

• Velocity exchange and mass ratios — 11 questions
• Energy transfer in elastic collisions — 5 questions

All 16 questions with solutions

• As shown below, bob A of a pendulum having massless string of length 'R' is released from 60° to the vertical… JEE Main 29th Jan 1st Shift 2025
• Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R). Ass… JEE Main 29th Jan 2nd Shift 2025
• As per the given figure, a small ball P slides down the quadrant of a circle and hits the other ball Q of equ… JEE Main 30th Jan 1st Shift 2023
• What percentage of kinetic energy of a moving particle is transferred to a stationary particle when it strike… JEE Main 27th June 1st Shift 2022
• Three objects A, B and C are kept in a straight line on a frictionless horizontal surface. The masses of A, B… JEE Main 27th July 1st Shift 2021
• An object of mass m₁ collides with another object of mass m₂, which is at rest. After the collision the objec… JEE Main 18th March 2nd Shift 2021
• Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Asserti… JEE Main 26th Feb 1st Shift 2021
• A body of mass m₁ moving with an unknown velocity of v₁̂i, undergoes a collinear collision with a body of mas… JEE Main 8th April 2nd Shift 2019
• A body of mass 2 kg makes an elastic collision with a second body at rest and continues to move in the origin… JEE Main 9th April 1st Shift 2019
• A simple pendulum, made of a string of length l and a bob of mass m, is released from a small angle θ₀. It st… JEE Main 12th Jan 1st Shift 2019
• An alpha-particle of mass m suffers 1-dimensional elastic collision with a nucleus at rest of unknown mass. I… JEE Main 12th Jan 2nd Shift 2019
• In a collinear collision, a particle with an initial speed v₀ strikes a stationary particle of the same mass.… JEE Main 2018
• It is found that if a neutron suffers an elastic collinear collision with deuterium at rest, fractional loss… JEE Main 2018
• A neutron moving with a speed 'v' makes a head on collision with a stationary hydrogen atom in ground state.… JEE Main Online 2016
• A large number (n) of identical beads, each of mass m and radius r are strung on a thin smooth rigid horizont… JEE Main Online 2015
• A body of mass 1 kg collides head on elastically with a stationary body of mass 3 kg. After collision, the sm… JEE Main 25th Jan 2nd Shift 2023