G. v = 40 km/h = 40 : 3.6 = 11.11 m/s
schild = 22 m; treaction = 0.9 s
A. s is not 22 m
S. breaking distance at 40 km/h = 10 m (fig. 28 page 197)
s = v x t = 11.11 x 0.9 = 10 m
stopping distance = reaction distance + breaking distance
stopping distance = 10 m + 10 m = 20 m. They do not collide.