Physics

A certain elevator cab has a total run of 215 m and a maximum speed is 309 m/min, and it accelerates from rest and then back to rest at 1.11 m/s2. (a) How far does the cab move while accelerating to full speed from rest? (b) How long does it take to make the nonstop 215 m run, starting and ending at rest?

(a) = 11.9 m

(b) ???

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