Find the correct answer:
A car covers 12 \(km\) in the first hour, 48 \(km\) in the second hour, and 33 \(km\) in the third hour. Is the motion uniform? Justify your answer. Find the average speed of the car.
i. Is the motion uniform?
ii. The car covers distances in each hour. Hence the motion of the car is
iii. The average speed of the car is \(km/h\)
[Note: Enter the answer as a whole number.]