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KVPY 2020-21 SA Exam Previous Papers

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Question : 19

Total: 80

A spacecraft which is moving with a speed u relative to the earth in the x-direction, enters the gravitational field of a much more massive planet which is moving with a speed 3u in the negative x-direction. The spacecraft exists following the trajectory as shown below.

The speed of the spacecraft with respect to the earth a long a time after it has escaped the planet’s gravity is given by

u
4u
2u
7u

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