A particle has displacement of $12 \,m$ towards east and $5 \,m$ towards north then $6 \,m $ vertically upward. The sum of these displacements is........$m$
$12$
$10.04$
$14.31$
None of these
A particle has displacement of $12 \,m$ towards east and $5 \,m$ towards north then $6 \,m $ vertically upward. The sum of these displacements is........$m$
$R = \sqrt {{{12}^2} + {5^2} + {6^2}} = \sqrt {144 + 25 + 36} = \sqrt {205} = 14.31\;m$
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