GravitationHard
Question
A body attains a height equal to the radius of the Earth when projected from Earth′ surface. The velocity of the body with which it was projected is : -
Options
A.
B.
C.
D.
Solution
By applying conservation of energy
KEi + PEi = KEf + PEf
mv2 - 
mv2 = 
mv2 =
⇒ u = 
KEi + PEi = KEf + PEf
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