What is the speed of a cyclist who travels a distance of 72 km in 4 hours?A18 m/sB12 m/sC5 m/sD4 m/sAnswer: C. 5 m/s Read Explanation: Speed= distance/ time = 72/4 = 18 km/hr = 18 × 5/18 m/s = 5 m/sRead more in App