VA UB

An engineer is studying the impacts of frontal car collisions on the occupants.
If a 1900-lb car with velocity vA = 30 mph collides head on with a 2800-lb car with velocity vb =
20 mph, the coefficient of restitution of the impact is e = 0.15, then determine the velocities of
each car after the collision. Assume car A and car B are on a flat surface, with car A traveling to
the right and car B traveling to the left.