To cover a distance of 90 km in 2.5 hours what should be the average speed of the car in meters/second?
1). 10
2). 20
3). 30
4). 40
Average speed can be given as total distance travelled/total time taken
⇒ average speed = 90/2.5 = 36 km/hr
To convert it into m/s multiply it by 5/18
⇒ 5 × 36/18
⇒ average speed = 10m/s
∴ average speed is 10 m/s