Find the Magnitude of Average velocity using the given vectors

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The discussion revolves around a question regarding the calculation of average velocity using given vectors. The original poster seeks validation for their solution approach. Other participants express approval of the method used. The conversation concludes with the original poster expressing gratitude for the feedback. Overall, the focus is on confirming the correctness of the average velocity calculation.
aatari
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Homework Statement
The drone flies in a straight line, and records how much time it took. Each new motion is relative to the present position. Meaning, a motion of (5i,0j,0k) followed by ( 5i,0j,0k) moves a distance of 10m. The following inputs were given, with their corresponding times in flight:

(3 i, -2 j, 5 z) --- 4s
(-15 i, 20 j, -18 z) --- 6s
(25 i, 24 j, -23 z) --- 10s

What was the magnitude of the average velocity during the entire flight?
Relevant Equations
Average Velocity = Magnitude of R/Total Time
Hi Guys I've attempted the question but not sure if the approach I used is correct. Would someone please have a look at my solution and let me know if it makes sense.
Thanks!
 

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Looks good to me :oldsmile:
 
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TSny said:
Looks good to me :oldsmile:
Ok Thank You!
 
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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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