A celestial body, not bound to sun, will only pass by the sun once. Calculate the minimum speed of such a body when it i

[answerhappygod]

A celestial body, not bound to sun, will only
pass by the sun once. Calculate the minimum
speed of such a body when it is at a distance of
1.5 × 1011 m from the sun (this is average distance
between the sun & the earth and is known as
astronomical unit- A.U.)
The mass of the sun is M ~ 2 × 1030 kg.
G N m
kg
= ¥ - - 6 67 10 11
2
2 .
Show that this speed is 2 times greater than
speed of earth around the sun, assuming circular
trajectory
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