Lecture 6 Angular Kinematics

Question 1

Degree

Answer 1

Most used measure

Question 2

Revolution

Answer 2

Number of rotations about a circle, 1 revolution is a single 360 degree rotation

Question 3

Radian

Answer 3

Angle at which arc length is equal to the radius, 1 radian = 57.3 degrees

Question 4

0 theta = _____
w omega = _____
a alpha = _____

Answer 4

Theta = displacement
Omega = velocity
Alpha = acceleration

Question 5

Counterclockwise rotations are…

Answer 5

Positive

Question 6

Clockwise rotations are…

Answer 6

Negative

Question 7

Angular displacement is the differences between the initial and final _______ of a rotating object

Answer 7

Orientation

Question 8

Angular displacement is a ______ quantity, meaning that the ________ of movement matters

Answer 8

Vector, direction

Question 9

Angular distance is the _____ of angular changes measured following a rotating segments _______

Answer 9

Total, exact path

Question 10

Angular velocity

Answer 10

Rate of change of angular displacement over time

W= 0f - 0i / t

Question 11

Slope of an angle vs time graph;

The steepness determines the ______ of angular velocity (rise over run)
The direction of the slope determines the _____ of angular velocity

Answer 11

1. Magnitude
2. Direction

Question 12

A change in the direction of the slope indicates a change in _________ on an angle vs. Time graph

Answer 12

Direction of movement

Question 13

A change in the sign of angular velocity indicates a change in _________ on an angular velocity vs. Time graph

Answer 13

Direction of movement