JEE MainPhysicsCenter of MassMCQ+4 / −1
Three objects A, B and C are kept in a straight line on a frictionless horizontal surface. The masses of A, B and C are m, 2m and 2m respectively. A moves towards B with a speed of 9 m/s and makes an elastic collision with it. Thereafter B makes a completely inelastic collision with C. All motions occur along same straight line. The final speed of C is : 
- A6 m/s
- B9 m/s
- C4 m/s
- D3 m/s
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