Question

A rocket burns 1.5kg of fuel per second and ejects it as gas with a velocity of 15m/s. Calculate the force exerted by the ejected gas on the rocket.

Answer 1

Answer:

Here , dmdt=−0.5kg/s,u=1600m/s

F=?υ=?

m=1200m0

F=−u(dmdt)=−1600(−0.5)=800N

As υ=2.303ulog10(m0m)

=2.303×1600log10200

=2.303×1600×2.3010

=8478.7m/s

8.48km/s .

Explanation:

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