Question

An object travels 20m in 5 sec and then another 20m in 3 sec. What is the average speed of the object
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Answer 1

Answer:

Average speed = (speed in 1st interval + speed in 2nd interval) ÷ 2

We know that ,

Speed = distance/time.

Speed of object in 1st interval = 20/4 = 5 m/s

Speed of object in 2nd interval = 20/10 = 2 m/s

Average speed = (5+2)/2 = 3.5 m/s

Answer 2

Answer:

The average speed of the object is 6m/s.

Explanation:

Average speed= (Total Distance)/(Total time)

                          = (20 m + 40 m)/(5 sec + 5 sec)

                          =60 m/10 sec

                          =6m/s