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 450 with the vertical, the escape velocity will be
A
11 √2km/s
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B
22 km/s
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C
11 km/s
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D
11/√2m/s
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Solution
The correct option is C 11 km/s Since while calculating escape velocity, we just take into account energy conservation without considering the orientation of the body. Hence, escape velocity is independent of direction and hence is same for each direction, i.e. 11km/s.