ThomasMagnus
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Homework Statement
Homework Equations
The Attempt at a Solution
I thought it was "D". The correct answer is "A". Can you help me figure out why?
Average Velocity Vector Diagram
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I thought it was "D". The correct answer is "A". Can you help me figure out why?
TheFerruccio
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What was your thought process that led you to believe it was D?
ThomasMagnus
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This is the diagram I used.
TheFerruccio
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ThomasMagnus said:This is the diagram I used.
Ah, I see. You changed the direction on the wrong vector. When subtracting vectors, you want to change the sign of the 2nd vector (the one being subtracted), not the resultant vector. Right now, assuming the velocity components are [tex]\vec{v_1}, \vec{v_2}[/tex], the final vector you drew was:
[tex]-(\vec{v_2} + \vec{v_1})[/tex]
when you want:
[tex]\vec{v_2}-\vec{v_1}[/tex]
I hope that helps!
(edit) messed up the subscripts, it should be correct now.