A particle is projected from the surface of the earth with an initial speed of 4 km per second
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Decrease in Kinetic energy = increase in gravitational potential energy of particle
12mv2=mgh1+hR
∴h=v22g−v2R
=(4.0×103)22×9.8−(4.0×103)26.4×106
=9.35×105m
we get h=935km
I hope this will help you
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hlooo mate ur ans....!!!!!
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