12. a 0.5 kg ball traveling at 6.2 m/s collides head-on with a 1.0 kg ball traveling in the
opposite direction at a speed of 12.0 m/s. after the collision, the 0.5 kg ball rebounds at
a speed of -14.0 m/s. what is the final speed of the 1.0 kg ball?

Which type of wave can travel without a medium

Road users moving into your lane, brake lights, and abrupt changes in road surface are a. rare at night b. indicators of potential hazards c. not worth worrying about before you reach them d. no problem for experienced drivers

Use the profile illustrated for problem (1). assume that the layer of silty sand fill (sm) is placed over the entire site. estimate the thickness of the fill (h - in feet) that will cause the effective vertical stress at the center of the clay layer to increase by 517.5 pounds per square foot.