A rocket, in the absence of gravity and other external forces, expels gas at a speed (v_{g}=1.5)
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A rocket, in the absence of gravity and other external forces, expels gas at a speed \(v_{g}=1.5\) \(\mathrm{km} / \mathrm{s}\) relative to the engines, starting from a standstill. What is its speed increment when it has ejected \(4 / 5\) of its mass?
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Mehwish Aziz
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