A comet revolves around the sun in an elliptical orbit. When it is closest to the sun at a distance d , its corresponding kinetic energy is k 0 . If it is farthest from the sun at distance 3 d then the corresponding kinetic energy will be

Question

A comet revolves around the sun in an elliptical orbit. When it is closest to the sun at a distance d , its corresponding kinetic energy is k 0 . If it is farthest from the sun at distance 3 d then the corresponding kinetic energy will be, k 0 9, 8 k 0 9, k 0 4, 4 k 0 9

MARKS App · Accepted Answer

v 1 r 1 = v 2 r 2 = constant ∴ v 0 d = 3 d v 1 ⇒ v 1 = v 0 3 ∴ KE = 1 2 m v 0 2 9 ⇒ KE = k 0 9

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