Multiple choice A man riding his bicycle covers 150 meters in 25 seconds. What is his speed in km/hr? 25 21.6 23 20 Reveal answer Fill a bubble to check yourself B Correct answer Explanation First, calculate speed in m/s: 150 ÷ 25 = 6 m/s. To convert to km/hr, multiply by 3.6 (since 1 m/s = 3.6 km/hr). Therefore, speed = 6 × 3.6 = 21.6 km/hr.