Combined Linear and Angular Kinematics: Master Motion in Sports

Question 1

Linear kinematics is the study of motion:

Accepted Answer

In a straight line

Answer

In a curved path

Answer

Involving both linear and angular displacement

Answer

Only involving angular displacement

Question 2

In a discus throw, the athlete's arm undergoes both linear and angular displacement. Which of the following describes the linear displacement?

Accepted Answer

Distance traveled by the hand from start to finish

Answer

Distance traveled by the elbow from start to finish

Answer

Distance traveled by the shoulder from start to finish

Answer

Distance traveled by the athlete's body from start to finish

Question 3

The unit of angular velocity is:

Accepted Answer

Radians per second

Answer

Metres per second

Answer

Degrees per second

Answer

Revolutions per minute

Question 4

A gymnast performing a somersault experiences:

Accepted Answer

Combined linear and angular motion

Answer

Linear motion only

Answer

Angular motion only

Answer

No motion

Question 5

The relationship between linear velocity and linear displacement is:

Accepted Answer

Positive correlation

Answer

Negative correlation

Answer

No correlation

Question 6

The equation that represents angular acceleration is:

Accepted Answer

a = rα

Answer

ω = 2πf

Answer

a = ωt

Answer

a = v/t

Question 7

A tennis player serves the ball with an initial velocity of 15 m/s, and the ball travels a distance of 12 m. What is the acceleration of the ball?

Accepted Answer

2.5 m/s²

Answer

0 m/s²

Answer

5 m/s²

Answer

10 m/s²

Question 8

Which of the following is the unit of angular displacement?

Accepted Answer

Radians

Answer

Metres

Answer

Seconds

Answer

Newtons

Question 9

Which quantity measures the angle turned per unit time?

Accepted Answer

Angle turned per unit time

Answer

Distance traveled per unit time

Answer

Displacement per unit time

Answer

Speed of the body

Question 10

How does angular momentum contribute to the stability of a sportsperson?

Accepted Answer

It helps them maintain balance and control

Answer

It increases their speed

Answer

It reduces their risk of injury

Answer

It has no effect on their stability

Question 11

What is a limitation of using kinematics to analyze sports performance?

Accepted Answer

It does not consider the forces involved

Answer

It assumes constant acceleration

Answer

It is only applicable to linear motion

Answer

It is too complex to be useful

Question 12

A javelin thrower releases the javelin with a velocity of (10 m/s) at an angle of (45^circ) relative to the horizontal. What is the horizontal component of the javelin's velocity?

Accepted Answer

(7.07 m/s)

Answer

(5 m/s)

Answer

(10 m/s)

Answer

(14.14 m/s)

Question 13

A gymnast performs a backflip on a balance beam. During the flip, the gymnast's body rotates through an angle of (180^circ) in (0.5 s). What is the gymnast's angular velocity?

Accepted Answer

(180 deg/s)

Answer

(90 deg/s)

Answer

(360 deg/s)

Answer

(720 deg/s)

Question 14

A discus thrower rotates the discus at a constant angular velocity of (20 rad/s). What is the period of rotation?

Accepted Answer

(0.1 s)

Answer

(0.05 s)

Answer

(0.2 s)

Answer

(0.3 s)

Question 15

Select the correct statement about vector quantities:

Accepted Answer

They have both magnitude and direction

Answer

They have only magnitude

Answer

They describe objects that do not move

Answer

They are not used in physics

Question 16

Identify the SI unit of angular acceleration:

Accepted Answer

Radians per second squared

Answer

Radians per second

Answer

Degrees per second

Answer

Degrees per second squared

Question 17

Which of the following factors do NOT influence the range of a projectile?

Accepted Answer

Mass of the projectile

Answer

Initial velocity

Answer

Angle of projection

Answer

Height above the ground

Question 18

A runner completes a 100m race in 10 seconds. What is their average speed?

Accepted Answer

10 m/s

Answer

5 m/s

Answer

15 m/s

Answer

20 m/s

Question 19

A gymnast performs a salto with an initial angular velocity of 5 rad/s. If they complete the salto in 1 revolution, what is their average angular acceleration?

Accepted Answer

10 rad/s²

Answer

5 rad/s²

Answer

15 rad/s²

Answer

20 rad/s²

Question 20

Which of the following describes the relationship between linear and angular motion in a rolling object?

Accepted Answer

Linear velocity is proportional to angular velocity

Answer

Linear velocity is inversely proportional to angular velocity

Answer

Linear velocity is constant, while angular velocity increases

Answer

Linear velocity is constant, while angular velocity decreases

Question 21

Which of the following is the SI unit for angular acceleration?

Accepted Answer

Radians per second squared

Answer

Radians per second

Answer

Degrees per second

Answer

Degrees per second squared

Question 22

A gymnast performing a somersault has an angular velocity of 10 rad/s at the start of the rotation. If the somersault takes 0.8 seconds to complete, what is the gymnast's angular displacement?

Accepted Answer

8 radians

Answer

2 radians

Answer

4 radians

Answer

16 radians