Vec{A} is a vector of magnitude 2.7 units due east. magnitude and direction of vector 4 vec{A} ?

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3-1.Vectors

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$\vec{A}$ is a vector of magnitude $2.7$ units due east. What is the magnitude and direction of vector $4 \vec{A}$ ?

A

$4$ units due east

B

$4$ units due west

C

$2.7$ units due east

D

$10.8$ units due east

Solution

(d)

$\vec{A}=2.7 \hat{i}$

Vector $4 \vec{A}$

$\Rightarrow 4(2.7 \hat{i})=10.8 \hat{i} \text { or } 10.8 \text { units due east. }$

Standard 11

Physics

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