[填空题]
A car with good tires on a dry roph(2snp e ,c*sad my051uy1x,0 idfgb wfcan decelerate 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)
