A small asteroid is approaching a planet of mass M and radius R from a large distance. Initially its velocity (u) is along a tangent to the surface of the planet. It fall on the surface making an angle of `30^(2)` with the vertical. Calculate u.

A small asteroid is approaching a planet of mass M and radius R from

1.	A small asteroid is approaching a planet of mass M and radius R from a large distance. Initially its velocity (u) is along a tangent to the surface of the planet. It fall on the surface making an angle of `30^(2)` with the vertical. Calculate u.
Answer» Correct Answer - `u=sqrt((2GM)/(3R))`

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A small asteroid is approaching a planet of mass M and radius R from a large distance. Initially its velocity (u) is along a tangent to the surface of the planet. It fall on the surface making an angle of `30^(2)` with the vertical. Calculate u.

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