The average speed of a car = 600 metres/minute = 10 m/s ⇒ Speed = distance/time ⇒ The average speed of a sprinter = 100/9.6 m/s ⇒ Difference of the average speed of car and sprinter = (100/9.6) – 10 ⇒ Difference of the average speed of car and sprinter = 40/96 = 5/12 m/s ∴ The car runs (5/12) m/s slower than a sprinter.