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Azhar, there is an error to your methods of calculations.

The velocity is displacement/time, yes. And your time provided is correct. But your displacement is incorrect.

1.5*10^11 is just the radius, in order to find the displacement, you must find the circumference.

So take the 1.5*10^11 and plug it in the equation 2*pi*r to get 9.4*10^11. Then plug this new number as the displacement over time to get your velocity.

Gena

the velocity has to be multiplied by 2(pie) to get 29885.87

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