$(12$ pts$)$ A light$-$rail commuter train accelerates at a rate of $1\mathrm{.}35$ m$/$s$?.$

a$.)$ How long does it take to reach its top speed of $80\mathrm{.}0$ km$/$h $(22\mathrm{.}2$ m$/$s$),$ starting from rest? B$.)$he same train ordinarily decelerates at a rate of $1\mathrm{.}65$ m$/$s$\text{'}.$ How long does it take to come to a stop from its top

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