Question

A boat with a sail, has an electric fan inside. When the fan starts, the boat

• A. Cannot move
• B. Can move
• C. Moves depending on wind directions
• D. Moves depending on the speed of the fan

Answer 1

The correct option is A Cannot move

When the fan starts, the fan will throw the air on the sail, which will take the boat forward.
But due to reaction force by the fan boat will go back.
Ultimately boat will stay at its point.