estion No 21 comet travels around sun in elliptical orbit Its mass is 105 kg...
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estion No 21 comet travels around sun in elliptical orbit Its mass is 105 kg When it is 2 5 x 1010 m away its speed is 2 x 10 m s1 The change in kinetic energy when it has ached 5 x 109 m away from sun is velocity and position vector of comet is perpendicular to each other at both instant 032 107 J O 2 4 x 10 J O 2 5 x 10 3 J O 48 10 2 J
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