You are stranded in a stationary boat. Your friend is on a dock, but the boat is

Question

You are stranded in a stationary boat. Your friend is on a dock, but the boat is just beyond his reach. There is a 5 kg anchor in the boat. You'd like to get the boat to move closer to the dock so your friend can rescue you. Select from the following list what effect each change will have on the position of the boat relative to the dock.

A. The boat will move away from the dock.
B. The boat will move closer to the dock.
C. The position of the boat relative to the dock will not change.

A B C  
If you throw the anchor directly away from the dock, what effect will this have on the boat?
A B C  
If you move to the end of the boat closest to the dock, what effect will this have on the boat?

Explanation / Answer

Usinf Principle of Conservation of Momentum,
If you throw the anchor directly away from the dock, what effect will this have on the boat?
B. The boat will move closer to the dock.

As the Center of mass of the boat - man would not change,
If you move to the end of the boat closest to the dock, what effect will this have on the boat?

A. The boat will move away from the dock.

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