Lecture 7 Angular Kinematics II

Question 1

What is angular acceleration?

Answer 1

Rate of change of angular velocity over time

a = wf - wi / t

Question 2

As with linear acceleration, what does or does not the sign of angular acceleration indicate?

Answer 2

Does not indicate the direction of movement

Question 3

If angular acceleration is in the same direction as angular velocity, the person is ______ their ______

Answer 3

Increasing, angular velocity

Question 4

If angular acceleration is in the opposite direction an angular velocity, the person is ______ their ________

Answer 4

Decreasing, angular velocity

Question 5

The _____ of an angular velocity vs time graph is angular acceleration

Answer 5

Slope

Question 6

_______ determines direction of angular acceleration

Answer 6

Direction of slope

Question 7

_________ determines magnitude of angular acceleration

Answer 7

Steepness of slope

Question 8

The _____ of an angular velocity vs time graph is angular displacement

Answer 8

Area