A rocket has a mass 21000kg of which 15000kg us fuel the rocket engine can exhaust fuel at the rate 190kg/s with an exhaust velocity 2500 m/s relative to rocket . if the rocket is fired vertically upwards its final velocity at the burn out is (given ln(3.5) = 1.253 )A. 2735B. 2935C. 2535D. 1975 Plz explain in detail

Shubhraja Gauraha , 7 Years ago

Grade 12