EM-1148

Standard form

E Math · Secondary 3 · Hard · Standard form

The surface velocity

v

of a point on Earth is given by

v = \omega r

, where

\omega = 7.3\times10^{-5}\,\text{rad/s}

and

r

is the effective radius in metres.
Find

v

at a location where

r = 6.20\times10^6\,\text{m}

.

$4.53\times10^2\,\text{m/s}$
$4.53\times10^3\,\text{m/s}$
$4.53\times10^1\,\text{m/s}$
$4.53\times10^{-2}\,\text{m/s}$

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