A particle is fired vertically upwards from the surface of earth and reaches a height 6400 km. Find the initial velocity of the particle if R= 6400 km and g at the surface of earth is 10 m/s^2.
FINAL ANSWER IS :- 8km/s
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The particle attain maximum height = 6400 km.
On earth’s surface, its P.E. & K.E.
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do it as indicated.........
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