An asteroid is moving directly towards the centre of the earth. when at a distance of 
is the radius of the earth) from the earths centre, it has a speed of 
. Neglecting the effect of earths atmosphere, what will be the speed of the asteroid when it hits the surface of the earth (escape velocity from the earth is 
? Give your answer to the nearest integer in kilometer/s
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(16) JEE Main 2020
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