To find the distance covered by the lorry in 4 seconds, we can use the formula:
Distance = Speed × Time
Given that the average speed of the lorry is 90 km/h, we first need to convert it to meters per second (m/s) since the time is given in seconds.
1 km = 1000 m 1 hour = 3600 seconds
So, the speed in meters per second is:
90 km/h × (1000 m/1 km) × (1 hour/3600 seconds) ≈ 25 m/s
Now we can calculate the distance covered in 4 seconds:
Distance = Speed × Time Distance = 25 m/s × 4 seconds Distance = 100 meters
Therefore, the lorry covers a distance of 100 meters in 4 seconds.