1.

A rocket of mass 6000 kg is set for vertical firing. If the exhaust speed is 1000m/sec. The rate of mass of gas ejected to supply a thrust needed to give the rocket an initial upward acceleration of 20.2 m//s^(2) is

Answer»

150 kg/sec
160 kg/sec
28 kg/sec
180 kg/sec

Answer :D


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