A rocket is fired in a gravity-free environment in deep space. The rocket has an initial mass of 8000 kg and ejects gas with a velocity of 2000 m/s. How much gas must be ejected in the first second to give the rocket an acceleration of 30.0 m/s2?
A) 120 kg
B) 7.50 kg
C) 15.0 kg
D) 12.0 kg
E) 150 kg
A
Physics & Space Science
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A) 1.72 m/s B) 7.47 m/s C) 55.8 m/s D) 10.6 m/s E) 27.9 m/s
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Physics & Space Science
If a material is strain-rate sensitive, when the strain rate increases, the applied _________must increase drastically.
Fill in the blank(s) with the appropriate word(s).
Physics & Space Science