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A rocket is projected upward from the earth's surface (r = RE) with an initial speed v0 that carries it to a distance r = 1.8 RE from the center of the earth. What is the launch speed v0? Assume that air friction can be ignored. Please help
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Verified answer
KE = delta_PE
(1/2)mvo^2 = (G*Mm/ r) - (G * Mm/ (r* 1.8))
(1/2)vo^2 = (G*M/ r) - (G * M/ (r* 1.8))=delta_P
vo = Sqrt(2 * delta_P)
vo = 7453.87186012197 m/s
= 7454 m/s
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