Building a mini physics motor boat -- Help?

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Should the propeller rotate clockwise or counter-clockwise? Which way will be faster and will allow the boat to accelerate the fastest?
 

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  • #2
CWatters
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What do you think and why?
 
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What do you think and why?
I don't know that's why I asked??? Please help I really need an answer
 
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berkeman
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I don't know that's why I asked??? Please help I really need an answer
What is the context for the question? Please supply many more details so we can try to help you. Is this problem for schoolwork?
 
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It doesn't matter which way it rotates, as long as it's rotating in the direction it is designed for.
Either way it's forcing water molecules to move in one direction, so the boat moves in the other direction.
The water molecules don't care which direction the propeller spins, they only are experiencing a compression effect, so they move.
 

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