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The energy spent in sending a body of ma...

The energy spent in sending a body of mass 1 kg surface of the earth infinity is, is escape velocity from the surface of the earth is 12 km/s.

A

`12xx10^(6)J`

B

`144xx10^(6)J`

C

`6xx10^(6)J`

D

`72xx10^(6)J`

Text Solution

Verified by Experts

The correct Answer is:
d
`"KE "=(1)/(2)mv_(e)^(2)`
`=(1)/(2)xx1xx12xx12xx10^(6)=72xx10^(6)J.`
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