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Vector Addition

If A⃗ is a ...

Question

If $\to A$ is a vector of magnitude 5 units due east. What is the magnitude and direction of a vector -5 $\to A$ ?

5 units due east

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25 units due west

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5 units due west

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25 units due east

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Solution

The correct option is B 25 units due west
$\to A = 5$ units due east.
$∴ - 5 \to A = - 5 (5$ units due east $) = - 25$ units due east $= 25$ units due west

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Similar questions

Suppose $\to a$ is a vector of magnitude 4.5 unit due north. What is the vector (a) 3 $\to a$ , (b) -4 $\to a$ ?

\to a = (3^i +^j)

\to A

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\to B

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\to A \cdot \to B

| \to A \times \to B |

\vec{a}

3 \vec{a}

- 4 \vec{a}

\to a

a_{x} = 3, a_{y} = 4

\to c

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