Find average velocity of Vector A and B

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SUMMARY

The discussion focuses on calculating the average velocity of two vectors, A and B, with specific initial conditions. Vector A has an initial velocity of 2 m/s at an angle of 60 degrees, while Vector B has a final velocity of 5 m/s at an angle of 330 degrees, over a time period of 5 seconds. The average acceleration formula, a(avg) = (B - A)/t, is suggested for determining the average velocity, indicating that the vectors are treated as perpendicular for this calculation.

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Arshad_Physic
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Homework Statement



Arrow 'A" is at an angle of 60 degress and V(initial)= 2 m/s. Arrow B is pointed at 330 degrees with V(final) of 5 m/s. Time= 5 seconds. What is the A(avg) vector is the question.

Homework Equations





The Attempt at a Solution



I am at a total loss... I know how to ADD vectors - how to get their direction - but the teacher just threw this question at us, and I can't find any help in book either...



Arshad
 
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Do you mean A(avg) is average acceleration? In that case
a(avg) = (B - A)/t
Since A and B are perpendicular to each other A + B and B - A are the same.
 
Thanks! I will try that! :)
 
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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