Topic: Elastic and inelastic collisions in one and two dimensions· Work, Energy and Power

Two identical balls A and B having velocities of 0.5 m/s and -0.3 m/s respectively collide elastically in one dimension. The velocities of B and A after the collision respectively will be

1. 0.5 m/s and -0.3 m/s

2. -0.3 m/s and 0.5 m/s

3. 0.3 m/s and 0.5 m/s

4. -0.5 m/s and 0.3 m/s

Doubtly Asked 30 Oct 2026 NEET UG 2016 Phase 2 Practice test neet Save WhatsApp Report

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Answer: 1. 0.5 m/s and -0.3 m/s

For an elastic head-on collision between two identical masses, the bodies simply exchange velocities. (Momentum and kinetic energy conservation both give this.)

Before: \(u_A=0.5\), \(u_B=-0.3\) m/s.
After: \(v_A=-0.3\) m/s and \(v_B=+0.5\) m/s.

The question asks for velocities of B and A respectively: 0.5 m/s and -0.3 m/s. Option (1).

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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Two identical balls A and B having velocities of 0.5 m/s and -0.3 m/s respectively collide elastically in one dimension. The velocities of B and A after the collision respectively will be

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