Fuel is consumed at the rate of 100 kg/sec in a rocket. The exhaust gases are ejected at a speed 4.5×10−4m/s. Then the thrust experienced by the rocket is
A
4.5×106N
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B
5.5×106N
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C
3.5×106N
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D
6.72×106N
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Solution
The correct option is A4.5×106N Here, Δm=100kg,Δt=1sec Relative speed of gases υr=4.5×104m/s Hence, Thrust =υr.ΔmΔt =4.5×104×1001 =4.5×106Newton