As shown in figure, person A is standing at the centre of a rotating platform facing person B who is riding a bicycle, heading East. The relevant speeds and distances are shown in the given figure, a bicycle, heading East. At the instant under consideration, what is the apparent velocity of B as seen by A?

$3 \frac{m}{s}$ heading east

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$3 \frac{m}{s}$ heading west

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$8 \frac{m}{s}$ heading east

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$13 \frac{m}{s}$ heading east

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Solution

The correct option is C
$8 \frac{m}{s}$ heading east

$_{B / A} =_{B} -_{A} = 8 - 0$
$= 8 \frac{m}{s}$ heading east.

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