PLEASE HELP A 64.0-kg male ice skater is facing a 42.0-kg female ice skater. They are at rest on the ice. They
push off each other and move in opposite directions. The female skater moves backwards with a
speed of 3.11 m/s. Determine the speed of the male skater (after collision)

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.