The distance between centre of the earth...

The distance between centre of the earth and moon is 384000 km . If the mass of the earth is `6xx10^(24) kg` and `G=6.66xx10^(-11)Nm^(2)//kg^(2)`. The speed of the moon is nearly

`1 kms^(-1)`

`4 kms^(-1)`

`8 kms^(-1)`

`11.2 kms^(-1)`

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The correct Answer is:

Relation for the orbital velocity is
`v_(0)=sqrt(GM_(e ))/(r )=sqrt(6.66xx10^(-11)xx6xx10^(24))/(3.84xx10^(8))`
`v_(0)=1xx10^(-3) ms^(-1)=1 kms^(-1)`

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