Question

an athlete make one round around a circular track of radius 2 metre in 3 minutes.what is his velocity​

Answer 1

Explanation:

As per the provided information in the given question, we have :

• An athlete make one round around a circular track of radius 2 metre in 3 minutes.

We are asked to calculate his velocity.

As we know that,

• Velocity is defined as distance covered in specific direction (displacement) divided time taken.

$\longmapsto \bf { Velocity = \dfrac{Displacement}{Time} }$

★ Calculating displacement :

Suppose the initial position of the body is A. Here, the body covers one round of the circular track, that means it comes back to point A after covering certain distance. So, the initial position and the final position of the body is same. Henceforth, the displacement is 0.

⇒ Displacement = 0

★ Calculating time :

A/Q

⇒ Time taken = 3 minutes

⇒ Time taken = (3 × 60) seconds

⇒ Time taken = 180 seconds

★ Calculating velocity :

$\longmapsto \bf { Velocity = \dfrac{Displacement}{Time} }$

$\longmapsto \rm { Velocity = \dfrac{0 \; m}{180 \; s} }$

$\longmapsto \bf { Velocity = 0 \; ms^{-1}}$

∴ His velocity is 0 m/s.

$\rule{200}2$

More Information :

• Velocity is defined as distance covered in specific direction (displacement) divided time taken.
• It is a vector quantity.
• Its SI unit is m/s.
• It is denoted by v.