Question

An object moves 18 m in the first 3s, 22m in the next 3s, and 14 m in the last 3s. What is it's average speed?

Answer 1

Explanation:

We know that the,

Avg speed is equal to the  total distance divided by the total time taken,

avg speed =3+3+318+22+14=954=6 m/s

Answer 2

s1=18m

t1=3s

s2=22m

t2=3s

s3=14m

t3=3s

Average speed=total distance/total time

s1+s2+s3/t1+t2+t3

(18+22+14)/(3+3+3)

54/9

6m/s

Thus,average speed is 6m/s