A) \[20\,m/{{s}^{2}}\]
B) \[10\,m/{{s}^{2}}\]
C) \[2\,m/{{s}^{2}}\]
D) \[1\,m/{{s}^{2}}\]
Correct Answer: B
Solution :
The acceleration of a rocket is given by \[a=\frac{v}{m}\left( \frac{\Delta m}{\Delta t} \right)-g=\frac{400}{100}\left( \frac{5}{1} \right)-10\] \[=(20-10)=10\,\,m/{{s}^{2}}\]
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