A projectile is fired from the surface of earth of radius R with a speed kv e in radially outward direction (where v e is the escape velocity and k < 1). Neglecting air resistance, the maximum Hight from center of earth is
A
B
k 2 R
C
D
kR
Text Solution
Verified by ExpertsThe correct answer is:
C
V e = 
V = kV e = 
Initial total energy = 
mv 2 – 
= 
m.k 2 
– 
Final total energy = 
m0 2 – 
Applying energy conservation
mk 2 . 
– 
= 0 – 
= 
– 
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