How Do Relative Velocity Changes Impact Object Motion Analysis?

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Relative velocity changes significantly impact object motion analysis by influencing the conservation of momentum in collisions. The discussion highlights a disagreement regarding the correctness of answers related to specific problems, particularly focusing on parts (a) and (b). One participant suggests applying conservation of momentum to clarify the solution. After further analysis, the initial disagreement is resolved, confirming that the answer for part (a) is correct. The conversation emphasizes the importance of understanding relative velocity in solving motion-related problems.
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I disagree with your answer for (a)

Try applying conservation of momentum
 
Nathanael said:
I disagree with your answer for (a)

Try applying conservation of momentum

Thanks solved it.
 
Last edited:
Your answer (a) looks correct but why do you say (b) is zero?
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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