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The escape velocity for a body projected...

The escape velocity for a body projected vertically upwards from the surface of earth is 11km/s. If the body is projected at an angle of `45^@` with the vertical, the escape velocity will be

A

`11//sqrt(2) km//s`

B

`11sqrt(2) km//s`

C

`22 km//s`

D

`11 km//s`

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The correct Answer is:
D
`K.E.` is scaler
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  2. The escape velocity of a body from earth's surface is ve. The escape v...

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