Question

An object moves 18m in the first 3 seconds and 22m in the next 3 seconds while it travels 14m in last 3 seconds. Calculate its average speed.

1) 6m/s
2) 27m/s
3) 18m/s
4) 9m/s​

Answer 1

Answer:

Average speed = (18/3 + 22/3 + 14/3)/3 = 6 m/s

I.e. Option 1)

Answer 2

Answer:

18/3=6

22/3=7.3

14/3=4.7

Average speed = 6+7.3+4.7/3

= 6 m/s