Question

A body travels 30m in 5s, 45m in 7s and then 65m in the last 5s. Find the average speed of the body

Answer 1

We can find the average speed of the body by finding the total distance covered, and then dividing it by the total time of the motion.

The total distance covered is:

`S=30 m + 45m+65m=140 m`

while the total time of the motion is

`t=5 s+7s+5 s=17 s`

So, the average speed of the body is:

`v= (S)/(t)= (140 m)/(17 s)=8.24 m/s`