Circular Motion

Question 1

What is the definition of a radian?

Answer 1

The angle subtended by a circular arc with a length equal to the radius of the circle.

Question 2

What is the definition of angular velocity?

Answer 2

The rate of change of angle

Question 3

What direction does linear velocity act?

Answer 3

Tangent to the circular path

Question 4

What is centripetal acceleration?

Answer 4

The acceleration of any object ravelling in a circular path at constant speed, always acts to centre of the circle

Question 5

What does centripetal acceleration depend on

Answer 5

Speed of the object ,v

Radius of circular path, r