Questions
A particle is thrown with escape velocity ve =11.2km/s from the surface of earth. Its velocity at height 3R = 19200 Km is:
a
9.25 km/s
b
5.6 km/s
c
11.2 km/s
d
4.3 km/s
detailed solution
Correct option is B
By using COME −GMmR+12mve2=−GMm4R+12mv2⇒v=5.6km/sTalk to our academic expert!
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