Questions
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 by rocket is
detailed solution
Correct option is B
Final speed, vb=2.303ulogm0mc=2.303×2km/s×log10001000−900=4.6km/s. (log10 10 = 1)Talk to our academic expert!
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In the figure given the position-time graph of a particle of mass 0.1 kg is shown. The impulse at t = 2 s is :
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