Multiple choice

To cover a distance of 81 km in 1.5 hours what should be the average speed of the car in meters/second? 81 किमी की दूरी 1.5 घंटे में तय करने के लिए मीटर / सेकंड में कार की औसत गति कितनी होगी ?

  1. 10

  2. 15

  3. 12

  4. 9

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Speed = Distance / Time = 81 km / 1.5 hours = 54 km/hr. Convert to m/s: 54 × (1000 m / 3600 s) = 54 × (5/18) = 15 m/s. The conversion factor from km/hr to m/s is 5/18.