First slide

Scalars and Vectors

Question

Consider a vector $\vec{F} = 4 \hat{i} - 3 \hat{j}$ . Another vector that is perpendicular to $\vec{F}$ is

Easy

A

$4 \hat{i} + 3 \hat{j}$
B

$6 \hat{i}$
C

$7 \hat{k}$
D

$3 \hat{i} + 4 \hat{j}$

Solution

Force F lie in the x-y plane so a vector along z-axis will be perpendicular to F.

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