Question 6 (1 point) An observer standing by the roadside noted a truck is travelling 18 m/s East while a cylinder inside the truck rolls to the back of the truck at 3
m/s West. Relative to the observer, how fast is the cylinder travelling?
оа 21 m/s
Ob
Ос
15 m/s
18 m/s
Od
3 m/s

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

How do the kidneys affect homeostasis

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.