A driver is suing the state highway department after an accident on a curved freeway. The driver lost control and crashed into a tree located a short distance from the outside edge of the curved roadway. The driver is claiming that the radius of curvature of the unbanked roadway was too small for the speed limit, causing him to slide outward on the curve and hit the tree. You have been hired as an expertwitness for the defense, and have been requested to use your knowledge in physics to testify that the radisu of curvature of the roadway is appropriate for the speed limit.


Required:

State regulations show that the radius of curvature of an unbaked roadway on which the speed limit 65mi/h must be at least 150m.