Question
A ball of mass m is fired vertically upwards from the surface of the earth with velocity nvₑ , where vₑ is the escape velocity and n < 1. Neglecting air resistance, to what height will the ball rise? (Take radius of the earth as R )
Options :
R/n²
R/(1-n²)
Rn²/(1-n²)
Rn²
Answer :
Rn²/(1-n²)
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