A) \[-2\alpha {{v}^{2}}/M\]
B) \[-\alpha {{v}^{2}}/M\]
C) \[+\alpha {{v}^{2}}/M\]
D) \[-\alpha {{v}^{2}}\]
Correct Answer: C
Solution :
\[F=\frac{dp}{dt}=v\ \left( \frac{dM}{dt} \right)=\alpha \,{{v}^{2}}\]\\[a=\frac{F}{M}=\frac{\alpha \,{{v}^{2}}}{M}\]
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