Find the terminal speed of a 750-kg rocket that starts from rest carrying 2600kg of fuel and that expels its exhuast gases at 1.8 k/ma(adsbygoogle = window.adsbygoogle || []).push({});

here's the formula im using: [tex]v_f = v_i + v_{ex}*ln{\frac{M_i}{M_f}}[/tex]

well since it's at rest, initial velocity is zero. so...

[tex]v_f = 1.8*ln(750/2500)[/tex] which turns out to be 2.2 km/s. but the book says the answer is 2.7km/s

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# Homework Help: Find the terminal speed of a 750-kg rocket

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