If a boats sail is blown by air produced by a fan on the boat, can the – InterviewSolution

1.	If a boats sail is blown by air produced by a fan on the boat, can the boat move forward?
Answer» No, the boat can not be moved by a fan on the boat, this is because when the fan pushes the sail blowing air, the air pushes the fan backwards with the same force. Since there is no external force on the system – the net change in momentum is zero.

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