9 5 14 A Rocket Is Fired Vertically Starting From Rest Neglecting Air Resistance What Velocity Will It Attain In 68 S 1 (34.32 KiB) Viewed 35 times
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9 5.14 A rocket is fired vertically starting from rest. Neglecting air resistance, what velocity will it attain in 68 s if its initial mass is 13 000 kg and fuel is burnt at the rate of 124 kg s', the gases being ejected at a velocity of 1950 m s relative to the rocket? If the fuel is exhausted after 68 s what is the maximum height that the rocket will reach? Take g = 9.8 m s? [1372 m s', 130.8 km]
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