1.

A particle is projected from the surface of the earth with an initial speed of 4 km per second

Answer»

e in KINETIC ENERGY = increase in GRAVITATIONAL POTENTIAL energy of particle12mv2=mgh1+hR∴h=v22g−v2R=(4.0×103)22×9.8−(4.0×103)26.4×106=9.35×105mwe get h=935kmI hope this will help youIf not then comment me



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