a cruise ship is moving at constant speed through the water. the vacationers on

Question

a cruise ship is moving at constant speed through the water. the vacationers on the ship are eager to arrive at their next destination .they decide to try to speed the ship by gathering at the bow and running together toward the stern (the back) of the ship . 
a-while they are running toward the stern,what is the speed of the ship?
-higher than it was before they started running or same or lower or cannot be determined
b-the vacationers stop running when they reach the stern. after they have all stopped running, what is the speed of the ship?
same multiple choices above ?

Explanation / Answer

As they are sending water backward so water will push the ship forward so speed of the ship will me more than before.so it will be higher than it was before

If they stop running ,the speed will be more due to inertia of motion but slowly slowly it will come to earlier speed

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