Question

an object moves 18 m in the first 3 seconds 22 m in the next 3 seconds and 14 m in the last 3 seconds what is its average speed

Answer 1

avg. speed = distance/time = (18+22+14)/(3+3+3) = 54/9 = 6m/s

Answer 2

Average speed = Total distance / Total Time
= (18 m + 22 m + 14 m) / (3 s + 3 s + 3 s)
= 54 m / 9 s
= 6 m/s

Average speed of object is 6 m/s