The least velocity required to throw a body away from the surface of a planet so that it may not return is $($radius of the planet is $6.4 \times {10^6}m,\,\,g = 9.8\,m/se{c^2})$
The least velocity required to throw a body away from the surface of a planet so that it may not return is $($radius of the planet is $6.4 \times {10^6}m,\,\,g = 9.8\,m/se{c^2})$
$9.8 \times {10^{ - 3}}\,m/sec$
$12.8 \times {10^3}\,m/sec$
$9.8 \times {10^3}\,m/sec$
$11.2 \times {10^3}\,m/sec$
The least velocity required to throw a body away from the surface of a planet so that it may not return is $($radius of the planet is $6.4 \times {10^6}m,\,\,g = 9.8\,m/se{c^2})$
Escape velocity from surface of earth ${v_e} = \sqrt {2gR} $
$= \sqrt {2 \times 9.8 \times 6.4 \times {{10}^6}} = 11.2 \times {10^3}\;m/s$
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