A rocket has total mass 1000 kg with fuel of 900 kg. It ejects fuel at the rate of 1 kg/s with an exhaust velocity of 2 km/s relative to rocket. The maximum velocity attained rocket is:
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According to conservation of momentum,mrvr+mfvf=(mf+mf)vcom
=>1000×1+900×2=(1000+900)vcom
=>vcom=1.47km/sec
=>1000×1+900×2=(1000+900)vcom
=>vcom=1.47km/sec
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