Answer:
The angular speed of rolling ball is 3.23 rad/sec.
Step-by-step explanation:
Given that,
Radius = 1.95 cm
Speed = 6.30 cm/s
Suppose, we need to find the angular speed of rolling ball
We need to calculate the angular velocity
Using formula of angular velocity
![v = r\omega](https://img.qammunity.org/2020/formulas/physics/middle-school/tl9o4le1v0uy88jtrc4kzjo6ebrd9feuft.png)
Where, r = radius
= angular velocity
Put the value into the formula
![\omega = (v)/(r)](https://img.qammunity.org/2020/formulas/physics/college/ia2p8pguqo1k3ekwoxtkc7sg7rphwius6q.png)
![\omega =(6.30)/(1.95)](https://img.qammunity.org/2020/formulas/physics/college/e572iqcillejn0vpsyqd5l1q11lzvdu0om.png)
![\omega=3.23\ rad/sec](https://img.qammunity.org/2020/formulas/physics/college/q23f0ph5um0jmbgaswmrwaua8wb2ljadzy.png)
Hence, The angular speed of rolling ball is 3.23 rad/sec.