One drop of oil falls straight down onto the road from the engine of a moving car every 5 s. Figure shows the pattern of the drops left behind on the pavement. What is the average speed of the car over this section of its motion?

Given Data:

Time taken between two drops = 5 s

Number of drops = 6

Total distance (from first drop to last) = 600 m

Average speed = ?

Number of intervals = 5

Total time taken=Number of intervals ×Time taken between two drops

t=5×5=25s

Avg. Speed=(Total distance)/(Total time taken)

v=s/t

v=600/25

v=24  m⁄s