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Multiplication with Vectors

What is the ...

Question

What is the $x$ component of the vector shown in above figure?

3 c m

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6 c m

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- 4 c m

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- 6 c m

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none of those answers

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Solution

The correct option is E $- 6 c m$
Answer (D). Take the difference of the $x$ coordinates of the ends of the vector, head minus tail: $- 4 - 2 = - 6 c m$ .

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