$1.$ Suppose that you drive the $10\mathrm{.}0$ km from your school to home in $40\mathrm{.}0$ min. Calculate your average speed in meters per second $($m$/$s$).$

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a$)8\mathrm{.}33$ m$/$s

b$)32\mathrm{.}5$ m$/$s

c$)12\mathrm{.}17$ m$/$s

d$)4\mathrm{.}17$ m$/$s