Question

An athlete runs on a circular track of radius 50m from the starting point A with a constant speed . it takes 50s for him reach point B which is at the other end of the diameter drawn from A. calculate the distance covered , displacement and the speed.

Answer 1

Answer:

• Distance and displacement = 100metres
• Speed = 2m/sec

Explanation:

Given that,

The athlete starts running from point A to B on a circular track of radius 50metres in 50seconds.

So, the distance covered will be the diameter of the track.

We know that,

→ Diameter = 2 × radius

So, the distance covered is

→ 2 × 50

→ 100metres

Here, displacement also will be 100metres as it is the shortest distance from A to B

Hence, Distance and the Displacement = 100m

Calculating the speed :-

→ Distance ÷ time

Where,

• distance = 100metres
• time = 50seconds

Then,

→ 100 ÷ 50

→ 2

Hence, the speed is 2 metres per second