A girl running around a circular track of radius 200 m completes one
revolution in 10 minutes. What is her average velocity in one full
revolution

Respuesta :

Answer:

v = 2 m/s

Explanation:

First, we find the angular velocity of the girl by using the following formula:

[tex]Angular\ Velocity =\omega= \frac{Angular\ Distance\ Covered}{Time\ Taken}\\\\\omega = \frac{1\ revolution}{10\ min}\frac{1\ min}{60\ s}\frac{2\pi\ rad}{1\ revolution}\\\\\omega = 0.01\ rad/s[/tex]

Now, for the average velocity of the girl we can use the following formula:

[tex]Average\ Velocity = V = r\omega\\V = (200\ m)(0.01\ rad/s)\\[/tex]

where,

r = radius = 200 m

therefore,

v = 2 m/s