Question

An object to travel 18 metre in 4 second and next 18 m in 2 seconds calculate the average speed of the object

Answer 1

V1 = 18/4 = 4.5
V2 = 18/2 = 9
Vavg = V1 + V2 /2 = 4.5 + 9 /2
Vavg = 13.5/2 = 6.75m/s

Answer 2

average speed = total traveled distance / total time

average speed = 18 + 18 / 4+2

= 36/6

= 6 m/s ...answer