Question

A cyclist goes around a circular track once every 2 minutes. If the radius of the circular

track is 105 meters, calculate his speed.​

Answer 1

Answer:

Explanation:

Given :-

Time taken by cyclist, t = 2 min = 2 × 60 = 120 seconds

As 1 minute = 60 seconds

Radius of track, r = 105 m

To Find :-

Speed

Formula to be used :-

Circumference of circle = 2πr

Speed = Distance/Time

Solution :-

Putting all the values, we get

Circumference of circle = 2πr

⇒ Circumference of circle = 2 × 22/7 × 105

⇒ Circumference of circle = 660 m

Now, speed

Speed = Distance/Time

⇒ Speed = 660/120

⇒ Speed = 5.5 m/s

Hence, the speed of cyclist is 5.5 m/s.