Question

3. An object travels 20m in 3sec 2 points
and then another 20m in 2sec.
What is the average speed of
the object?
O
8m
O
8m/s
O
8cm
O
8m/s2​

Answer 1

Explanation:

An object travels 20 m in 4 seconds and then another 20 m in 10 seconds. What is the average speed of the object?

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