The escape speed of a particle on the su...

The escape speed of a particle on the surface of the earth is 11.2km/second. A body is projectwith thrice this speed from the surface of the earth. What is the speed of the body in the outer space far away from the earth?

`22.4kms^(-1)`

`31.7kms^(-1)`

`33.6kms^(-1)`

None of these

Text Solution

Verified by Experts

The correct Answer is:

`v=sqrt((3v_e)^2-v_e^2)=2sqrtxxv_e`
`=31.7 km//sec`

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