A) \[7.2\text{ }m\text{ }{{s}^{-1}}\]
B) \[\text{9}\text{.8 }m\text{ }{{s}^{-1}}\]
C) \[\text{8 }m\text{ }{{s}^{-1}}\]
D) \[\text{10 }m\text{ }{{s}^{-1}}\]
Correct Answer: A
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