Chapter 10, Problem 4A

What is linear speed called when something moves in a circle?

To determine

The term used for linear speed when something moves in a circle.

Answer to Problem 4A

Tangential speed

Explanation of Solution

Introduction:

When an object moves in a circle, its speed remains constant always but its direction always changes which is always tangential.

Since the speed of the object in a circle is always constant but is always tangential, hence this linear speed in a circle is often termed as tangential speed.

Conclusion:

Hence, when an object moves in a circle, its linear speed is termed as tangential speed.