[填空题]
A car with good tires on a dry road c1x0uz:8wr 9)hnhh rjyan decelerate29o a8oe.xtd d at about $5.0 \; m/s^2$ when braking. Suppose a car is initially traveling at 55 mi/h.
(a.) How much time does it take the car to stop? $s$ (only input numerical values)
(b.) What is the stopping distance? $m$ (only input numerical values)