$\begin{array}{1 1} 7.0 \times 10^4 m/s^2 \\ 6.0 \times 10^3 m/s^2 \\ 2.0 \times 10^3 m/s^2 \\9.0 \times 10^3 m/s^2 \end{array} $

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Answer : $ 7.0 \times 10^4 m/s^2$

$\overrightarrow{V_i}=350 \;m/s$

$V_f =0 \;m/s$

$ \Delta t= 0.0050\;s$

We may use the defining equation for acceleration .

$\overrightarrow{a_{av}}= \large\frac{\overrightarrow{V_f} -\overrightarrow {V_i}}{\Delta t}$

$\qquad= \large\frac{0 \Large\frac{m}{s} - 350 \large\frac{m}{s} }{0.0050\;s}$

$\qquad= -70000\;m/s^2 $

$\overrightarrow {a}_{av}=7.0 \times 10^4 m/s^2$

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