A pitcher throws a 90-mi!h fastball to a batter, who hits a line drive directly back to the pitcher. The ball is in contact with the bat for 0.001 s and leaves the bat with velocity 110 mi!h. A baseball weighs 5 oz and, in U. S. Customary units, its mass is measured in slugs: m ! w!t where t ! 32 ft!s2