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Solution


Q.

A body of mass 1000 kg is moving horizontally with a velocity 6 m/s. If 200 kg extra mass is added, the final velocity (in m/s) is      [2024]
1 6  
2 2  
3 3  
4 5  

Ans.

(4)  

        Momentum will remain conserve

        1000×6=1200×v

          v=5m/s