Question

An athlete runs around a circular track of circumference 360 m in (1/60) h and reaches the
starting point. Calculate, () The distance covered by athlete
(1) The displacement
(1) The average speed & The average velocity​

Answer 1

Explanation:

Given,

circumference of circular track = 360m

time taken = 1/60 hr = 1 min

(i) the distance covered = circumference

= 360 m

(ii) Displacement - 0

(iii) Average speed = distance/time

= 360 m/s

Average velocity = Displacement/ time

= 0/1= 0

Answer 2

Given:

An athlete runs around a circular track of circumference 360 m in (1/60) h and reaches the

starting point.

To find:

• Distance
• Displacement
• Average speed
• Average velocity

Calculation:

1. Distance = 2 × π × r

=> Distance = circumference

=> Distance = 360 metres

2. Displacement will be zero. This is because the starting and stopping point of the athelete was same.

3. Average speed = Distance/Time

=> Average speed = 360m/60 sec

=> Average speed = 60 m/s

4. Average velocity = Displacement/Time

=> Average velocity = 0/60

=> Average velocity = 0 m/s.

$\star$ Hope It Helps.