Master Angular Motion in Physical Education: Quizzes and Practice

Question 1

Which of the following factors does NOT affect the moment of inertia of an object?

Accepted Answer

Temperature

Answer

Mass

Answer

Distribution of mass

Answer

Shape

Question 2

A spinning diver increases their speed by pulling their arms closer to their body. This is an example of:

Accepted Answer

Conservation of angular momentum

Answer

Newton's second law of motion

Answer

The law of conservation of energy

Answer

The work-energy theorem

Question 3

During a gymnast's backflip on a balance beam, which principle is NOT applicable?

Accepted Answer

Newton's first law of motion

Answer

Conservation of angular momentum

Answer

Newton's third law of motion

Answer

Centripetal force

Question 4

As a figure skater pulls in their arms while spinning, what happens to their moment of inertia?

Accepted Answer

Decreases

Answer

Increases

Answer

Remains constant

Answer

Fluctuates randomly

Question 5

Which unit is used to express angular acceleration?

Accepted Answer

rad/s²

Answer

m/s²

Answer

rad/s

Answer

m²/s

Question 6

Which action best describes torque?

Accepted Answer

Applying a force at a distance from the axis of rotation

Answer

Applying a force to a stationary object

Answer

Applying a force parallel to the axis of rotation

Answer

Applying a force to a moving object

Question 7

To increase angular velocity during a pirouette, a dancer can:

Accepted Answer

Pull in their arms

Answer

Extend their arms

Answer

Move their head rapidly

Answer

Jump up and down

Question 8

The moment of inertia, I, of a body is a measure of its:

Accepted Answer

Resistance to rotational motion

Answer

Mass

Answer

Density

Answer

Shape

Question 9

The angular momentum of a rotating object is conserved if there is:

Accepted Answer

No net external torque acting on it

Answer

A constant net external torque acting on it

Answer

A decreasing net external torque acting on it

Answer

An increasing net external torque acting on it

Question 10

Which of the following is NOT an application of angular motion in physical education?

Accepted Answer

Running

Answer

Discus throw

Answer

Golf swing

Answer

Cycling

Question 11

A gymnast performs a backflip on a balance beam. Which of the following is the axis of rotation?

Accepted Answer

The gymnast's longitudinal axis

Answer

The balance beam's transverse axis

Answer

The balance beam's longitudinal axis

Answer

The gymnast's transverse axis

Question 12

A dancer performs a pirouette. What is the direction of the angular velocity vector, ω?

Accepted Answer

Perpendicular to the ground

Answer

Upwards

Answer

Downwards

Answer

Parallel to the ground

Question 13

Which formula accurately represents the rotational kinetic energy of an object?

Accepted Answer

Er = ½ Iω^2

Answer

Ek = ½ mv^2

Answer

Ek = Iω

Answer

Er = ½ mv

Question 14

Among the provided options, which device is specifically used to measure angular velocity?

Accepted Answer

Tachometer

Answer

Speedometer

Answer

Dynamometer

Answer

Anemometer

Question 15

Which factors play a role in influencing the moment of inertia of a body?

Accepted Answer

Both mass and shape

Answer

Mass

Answer

Shape

Answer

Speed

Question 16

Within the context of physical education, which activity exemplifies the application of angular motion?

Accepted Answer

Discus throw

Answer

High jump

Answer

Running

Answer

Swimming

Question 17

Which unit of measurement is appropriate for expressing angular acceleration?

Accepted Answer

rad/s^2

Answer

m/s

Answer

m/s^2

Answer

rad/s

Question 18

Which law of conservation is applicable to angular motion?

Accepted Answer

Conservation of angular momentum

Answer

Conservation of energy

Answer

Conservation of momentum

Answer

Conservation of force

Question 19

Which unit is used to measure angular velocity?

Accepted Answer

rad/s

Answer

m/s

Answer

m/s²

Answer

rad/s²

Question 20

Which of the following is NOT a correct equation of rotational motion?

Accepted Answer

v = u + at

Answer

ω = ω₀ + αt

Answer

θ = θ₀ + ω₀t + ½ αt²

Answer

α = (ωf - ω₀) / t

Question 21

Which property of an object measures its resistance to angular acceleration?

Accepted Answer

Moment of inertia

Answer

Angular velocity

Answer

Angular momentum

Answer

Torque

Question 22

The angular velocity of a rotating object is directly proportional to the:

Accepted Answer

Net torque acting on it and inversely proportional to its moment of inertia

Answer

Kinetic energy and displacement

Answer

Force applied and time

Answer

Displacement and moment of inertia

Question 23

Which of the following is the unit of angular acceleration?

Accepted Answer

Radians per square second (rad/s²)

Answer

Degrees per square second (deg/s²)

Answer

Revolutions per square second (rev/s²)

Answer

Radians per second (rad/s)

Question 24

Which of the following factors determines the torque applied to an object?

Accepted Answer

Force applied and distance from the axis of rotation

Answer

Mass of the object and its velocity

Answer

Coefficient of friction and surface area

Answer

Temperature and humidity

Question 25

The moment of inertia of a solid sphere of mass 'm' and radius 'r' is given by:

Accepted Answer

(2/5)mr²

Answer

(1/2)mr²

Answer

(1/10)mr²

Answer

(3/5)mr²

Question 26

Define angular acceleration and specify its formula.

Accepted Answer

The rate of change of angular displacement over time; formula: α = Δω/Δt

Answer

The rate of change of angular velocity over time; formula: α = Δt/Δω

Answer

Twice the angular velocity divided by time; formula: α = 2ω/t

Answer

Time divided by twice the angular velocity; formula: α = t/2ω

Question 27

For a body rotating with constant angular velocity, what can you conclude about its angular acceleration?

Accepted Answer

It is zero

Answer

It is non-zero

Answer

It is increasing

Answer

It is decreasing

Question 28

What characterizes a rigid body exhibiting rotational motion?

Accepted Answer

Preserves its shape and size during rotation

Answer

Deforms or changes shape during rotation

Answer

Moves in a straight line during rotation

Answer

Varies its speed during rotation

Question 29

What is the standard unit of measurement for moment of inertia?

Accepted Answer

Kilogram square meters

Answer

Newton meters second

Answer

Radian second

Answer

Degree per second

Question 30

Which sport heavily relies on angular motion techniques?

Accepted Answer

Gymnastics

Answer

Swimming

Answer

Cycling

Answer

Running

Question 31

The formula for angular velocity (ω) is:

Accepted Answer

ω = Δθ / Δt

Answer

ω = v / r

Answer

ω = s / r

Answer

ω = v / θ

Question 32

Which of the following factors does NOT affect the moment of inertia of a body?

Accepted Answer

Speed of the body

Answer

Mass of the body

Answer

Distribution of mass

Answer

Shape of the body

Question 33

For a figure skater spinning with constant angular velocity, the relationship between her linear velocity (v) and angular velocity (ω) is:

Accepted Answer

v = ωr

Answer

v = r / ω

Answer

ω = v / r

Answer

ω = 2πv

Question 34

The formula for angular acceleration (α) is:

Accepted Answer

α = Δω / Δt

Answer

α = ω / t

Answer

α = t / ω

Answer

α = v / r

Question 35

Which conservation law is applicable to angular motion?

Accepted Answer

Conservation of angular momentum

Answer

Conservation of energy

Answer

Conservation of momentum

Answer

Conservation of mass

Question 36

An athlete spins a discus with a radius of 0.5 m. If the discus completes one full revolution (360°) in 1.5 seconds, what is its angular velocity?

Accepted Answer

2.08 rad/s

Answer

1.04 rad/s

Answer

3.14 rad/s

Answer

4.18 rad/s

Question 37

Which of the following factors does NOT affect the moment of inertia of an object?

Accepted Answer

Volume

Answer

Mass

Answer

Distribution of mass

Answer

Shape

Question 38

A figure skater spinning on ice has an angular momentum of 40 kg·m²/s. If they extend their arms outwards, what happens to their angular velocity?

Accepted Answer

Decreases

Answer

Increases

Answer

Remains the same

Answer

Cannot be determined

Question 39

During a somersault, which of the following quantities remains constant?

Accepted Answer

Angular momentum

Answer

Kinetic energy

Answer

Angular velocity

Answer

Linear momentum

Question 40

What is the SI unit for measuring angular velocity?

Accepted Answer

Radians per second (rad/s)

Answer

Degrees per second (°/s)

Answer

Revolutions per minute (rpm)

Answer

Hertz (Hz)

Question 41

In rotational motion, which of the following quantities plays a similar role to mass in linear motion?

Accepted Answer

Moment of inertia

Answer

Angular velocity

Answer

Torque

Answer

Angular momentum

Question 42

What physical quantity is produced by a force applied perpendicularly to the axis of rotation?

Accepted Answer

Torque

Answer

Centripetal force

Answer

Linear momentum

Answer

Angular velocity

Question 43

The moment of inertia of a rotating object is primarily dependent on:

Accepted Answer

Both its mass and its distribution

Answer

Mass only

Answer

Shape only

Answer

Angular velocity

Question 44

Why does a spinning top eventually slow down and stop moving?

Accepted Answer

Frictional torque

Answer

Gravity

Answer

Decrease in moment of inertia

Answer

Loss of angular momentum

Question 45

Which equation accurately describes the relationship between angular acceleration (α), torque (τ), and moment of inertia (I)?

Accepted Answer

τ = Iα

Answer

I = ατ

Answer

τ = I/α

Answer

α = Iτ