Two bodies A and B of same mass undergo completely inelastic one dimensional collision. The body A moves with velocity v_1 while body B is at rest before collision. The velocity of the system after collision is v_2. The ratio v_1 : v_2 is :

1. 1:4

2. 1:2

3. 2:1

4. 4:1

Doubtly Asked 30 Oct 2026 NEET UG 2024 Practice test neet Save WhatsApp Report

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Best answer

Answer: 3. 2:1

Key idea: In a completely inelastic collision the bodies stick together and momentum is conserved.

\(mv_1+0=(m+m)v_2\), so \(v_2=\frac{v_1}{2}\).

Therefore \(v_1:v_2=2:1\). Option 3.

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

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