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- Thread starter Bassel AbdulSabour
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- #2

berkeman

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Why not? What else would they be equal to?

- #3

fresh_42

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Because these are the addition laws of a vector space: ##\begin{bmatrix}u_x\\u_y\end{bmatrix}+\begin{bmatrix}v_x\\v_y\end{bmatrix}=\begin{bmatrix}(u+v)_x\\(u+v)_y\end{bmatrix}\,.## This coincides with the geometric vector addition of arrows. But whatever you take as a definition, they should yield the same result.

- #4

Tom.G

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- #5

hmmm27

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Pulling or pushing ?

- #6

wrobel

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It follows from one of the axioms of Classical mech.: the Principle of Superposition

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