An empty 20,000 kg coal wagon is moving on a level track at 5 m/s. Suddenly 5000 kg of coal isdumped into it from directly above. The coal initially has zero horizontal velocity. The final speed of the wagon is
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6.25m/s is the final speed of wagon afteR adding 5000kg coal to 20,000kg
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Answer: ans is 4 m/s as shown in the picture .
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