What change in velocity would be produced on a body of mass 4kg if a constant force of 16N acts on it for 2s? Please show working.​

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.