A ceiling fan is turned on and reaches an angular speed of 110 rev/min in 20 s.It is then turned off and coasts to a stop in an additional 60 s.The ratio of the average angular acceleration for the first 20 s to that for the last 60 s is which of the following?
A) -0.3
B) -3
C) 3
D) 0.3
E) 1.4

Question

A ceiling fan is turned on and reaches an angular speed of 110 rev/min in 20 s.It is then turned off and coasts to a stop in an additional 60 s.The ratio of the average angular acceleration for the first 20 s to that for the last 60 s is which of the following?
A) ​-0.3
B) -3
C) ​3
D) ​0.3
E) ​1.4

Quizplus · Accepted Answer

The Answer of A ceiling fan is turned on and reaches an angular speed of 110 rev/min in 20 s.It is then turned off and coasts to a stop in an additional 60 s.The ratio of the average angular acceleration for the first 20 s to that for the last 60 s is which of the following?
A) ​-0.3
B) -3
C) ​3
D) ​0.3
E) ​1.4

A Ceiling Fan Is Turned on and Reaches an Angular