3rd prep quiz 2

It is the total distance covered by an object divided by total time.
Regular speed
Average speed
Relative speed
When a body moves with regular speed, its average speed------------its regular speed.
Equal to
More than
Less than
Calculate the average speed of an object that covers a distance of 84 m in 12 sec then 56 m in 8 sec then 28 m in 4 sec.
17 m/s
7m/s
9m/s
The relative speed is equal to the real speed when……..
The observer is moving in opposite direction.
The observer is moving in the same direction.
The observer is at rest.
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