Angular Kinematics

Question 1

What is the influence of arm length when throwing a discus?

Answer 1

An increase in arm length = increase in distance

Question 2

T/F Angular kinematics values are not described the same way as linear kinematics values

Answer 2

False, they are described the same way

Question 3

Define displacement

Answer 3

Change in position

Question 4

Define velocity

Answer 4

Change in position relative to the interval in which it takes place

Question 5

Define acceleration

Answer 5

Change in velocity relative to the interval in which the change takes place

Question 6

What type of force is applied in angular kinematics

Answer 6

eccentric force

Question 7

T/F for angular kinematics, there is a specified axis of rotation

Answer 7

True

Question 8

When can the reference axis move

Answer 8

In relative angular position

Question 9

When can the reference axis not move

Answer 9

In absolute angular position

Question 10

Define angular displacement

Answer 10

Change in angular position of a segment or any point on the rotating segment

Question 11

what is the formula for angular displacement

Answer 11

angular displacement = final - initial

Question 12

In curvilinear displacement, what will happen to all the points on the line

Answer 12

They will be angularly displaced the same amount

Question 13

What will linear displacement depend on in curvilinear displacement

Answer 13

On the radius of rotation

Question 14

What is curvilinear displacement proportional to

Answer 14

To angular displacement

Question 15

Define angular velocity

Answer 15

The rate of change of angular displacement

Question 16

What are the 3 rates of motion in angular kinematics

Answer 16

• Average rate of motion
• Instantaneous velocity
• Peak rate of motion

Question 17

Define tangential linear velocity

Answer 17

Linear velocity of a point on a rotating segment

Question 18

What is tangential linear velocity tangent to

Answer 18

The path of the object

Question 19

What does the speed a point moves depend on

Answer 19

On how far that point is from the axis from rotation

Question 20

Define angular acceleration

Answer 20

A change in magnitude and/or direction of the angular velocity vector with respect to time

Question 21

Define tangential linear acceleration

Answer 21

Linear acceleration of a point of a rotating segment

Question 22

Define centripetal acceleration

Answer 22

Acceleration caused by change in direction of the velocity vector

Question 23

If two people are doing the hammer throw, the weight is the same but the radius for person 1 is longer, who was to pull harder on the string to throw the same distance?

Answer 23

The person with the shorter string