A 33.0-kg child starting from rest slides down a water slide with a vertical height of 15.0 m. (Neglect friction.) (a) What is the child's speed halfway down the slide's vertical distance?
m/s

(b) What is the child's speed three-fourths of the way down?
m/s
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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.