Kinematics of Circular Motion

Question 1

Define linear velocity.

Answer 1

The linear velocity of an object is defined as the rate of change of its displacement from some point.

Question 2

Define angular velocity.

Answer 2

The angular velocity of an object is defined as the rate of change of its angular displacement.

Question 3

A mass is undergoing circular motion. Select the correct statement from the following:

A The mass has a constant speed, zero acceleration and therefore the net-force acting on the satellite must equal zero
B The mass has a non-constant speed, non-zero acceleration and therefore the net-force acting on the satellite must be non-zero
C The mass has a constant speed, non-zero acceleration and therefore the net-force acting on the satellite must be non-zero
D The mass has a non-constant speed, non-zero acceleration and therefore the net-force acting on the satellite must equal zero

Answer 3

C The mass has a constant speed, non-zero acceleration and therefore the net-force acting on the satellite must be non-zero