(1) An object moves 18 m the in first 3 second and 22 m in the next 3 second while it travels 14 m in the last 3 second. Calculate average speed. [Ans = 6 m/s]
(2) A person travels a distance of 72 km in 4 hours. Calculate average speed in m/s.
[Ans = 5 m/s]