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A $500 k g$ boat has an initial speed of $20 m s^{- 1}$ as it passes under a bridge. At that instant a $50 k g$ man jumps straight down into the boat from the bridge. The speed of the boat after the man and boat attain a common speed is

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20011ms−1

2011ms−1

5011ms−1

511ms−1

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detailed solution

Correct option is A

V1=MVM+m=500×20550 =20011

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A 500kg boat has an initial speed of 20ms–1 as it passes under a bridge. At that instant a 50kg man jumps straight down into the boat from the bridge. The speed of the boat after the man and boat attain a common speed is

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Ready to Test Your Skills?

free study material

A $500 k g$ boat has an initial speed of $20 m s^{- 1}$ as it passes under a bridge. At that instant a $50 k g$ man jumps straight down into the boat from the bridge. The speed of the boat after the man and boat attain a common speed is