Question

an athlete is running on a circular track he runs a distance of 400 m in 25 seconds before returning to his original position what is his average speed and velocity

Answer 1

hope it helps u.....thankk u.....

Answer 2

AVERAGE SPEED IS 16 m/s & AVERAGE VELOCITY IS ZERO.

Given:

• Distance covered = 400 m
• Time = 25 sec
• Runner returns to starting position.

To find:

• Average velocity
• Average speed

Calculation:

Average speed is the total distance divided by the total time taken.

$avg. \: s = \dfrac{distance}{time}$

$\implies \: avg. \: s = \dfrac{400}{25}$

$\implies \: avg. \: s = 16 \: m/s$

Average velocity is the total displacement divided by the total time taken.

$avg. \: v= \dfrac{displacement}{time}$

• Here, the starting and stopping point of the runner is same, hence the displacement will be zero.

$\implies avg. \: v= \dfrac{0}{time}$

$\implies avg. \: v= 0$