A man is driving his car with speed 45.0 mi/h on a horizontal stretch of road.(a)When the road is wet, the coefficient of static friction between the road and the tires is 0.101. Find the minimum stopping distance (in m).m(b)When the road is dry,μs = 0.597.Find the minimum stopping distance (in m).

A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.