Biomechanics of Skilled Movement: Master the Science of Movement

Question 1

Which of the following is not a parameter measured in kinematic analysis?

Accepted Answer

Electromyographical activity

Answer

Linear displacement

Answer

Angular velocity

Answer

Ground reaction force

Question 2

In fluid mechanics, what force opposes the downward motion of an object in a fluid?

Accepted Answer

Drag

Answer

Gravity

Answer

Friction

Answer

Buoyancy

Question 3

What is the primary purpose of electromyography (EMG) in biomechanics?

Accepted Answer

Measurement of muscle activity

Answer

Determination of joint angles

Answer

Calculation of ground reaction forces

Answer

Analysis of kinematics

Question 4

What is the main objective of kinematic analysis in biomechanics?

Accepted Answer

Description of object motion

Answer

Determination of forces acting on an object

Answer

Optimization of movement patterns

Answer

Prevention of injuries

Question 5

Which factor does NOT directly impact the effectiveness of human movement?

Accepted Answer

Motivation

Answer

Coordination

Answer

Strength

Answer

Flexibility

Question 6

Which of the following is NOT a type of kinematic analysis technique?

Accepted Answer

Measuring ground reaction forces

Answer

Measuring linear displacement

Answer

Calculating angular velocity

Answer

Examining joint angles

Question 7

The duration of a movement refers to the:

Accepted Answer

Time taken for the movement to be completed

Answer

Speed at which the movement is performed

Answer

Rate at which the movement accelerates

Answer

Distance covered during the movement

Question 8

The study of the forces acting within the body is known as:

Accepted Answer

Kinetics

Answer

Kinematics

Answer

Dynamics

Answer

Biomechanics

Question 9

Which of the following devices is commonly used to measure angular velocity?

Accepted Answer

Gyroscope

Answer

Accelerometer

Answer

Force plate

Answer

Electromyography

Question 10

For a projectile launched at an angle, what is the angle that results in the maximum horizontal range?

Accepted Answer

45 degrees

Answer

30 degrees

Answer

60 degrees

Answer

90 degrees

Question 11

What is the type of muscle contraction that results in a muscle shortening and movement?

Accepted Answer

Concentric

Answer

Eccentric

Answer

Isometric

Answer

Isokinetic

Question 12

Which of the following is a fundamental principle of biomechanics?

Accepted Answer

The law of action and reaction

Answer

The law of conservation of energy

Answer

The law of universal gravitation

Answer

The law of thermodynamics

Question 13

Which of the following is a commonly used method for analyzing the kinetics of movement?

Accepted Answer

Force plate

Answer

Electromyography

Answer

Motion capture

Answer

High-speed camera

Question 14

Which of the following is NOT a component of linear momentum?

Accepted Answer

Force

Answer

Mass

Answer

Velocity

Answer

Direction

Question 15

The moment of inertia of an object about a rotational axis is proportional to its:

Accepted Answer

Mass and the square of its radius

Answer

Velocity and its mass

Answer

Acceleration and its radius

Answer

Force and its distance from the axis

Question 16

Which of the following forces is NOT centripetal?

Accepted Answer

Normal force between the ground and a car moving in a straight line

Answer

Gravity acting on a planet orbiting a star

Answer

Tension in a rope keeping a ball in circular motion

Answer

Friction between a car tire and the road during a turn

Question 17

The efficiency of a device is a measure of its:

Accepted Answer

Useful output relative to energy input

Answer

Energy input relative to useful output

Answer

Total output relative to useful output

Answer

Total input relative to energy output

Question 18

Inertia refers to:

Accepted Answer

An object's resistance to changes in its motion

Answer

The force required to accelerate an object

Answer

The mass of an object

Answer

The velocity of an object

Question 19

Which of the following is NOT a strategy for optimizing movement efficiency?

Accepted Answer

Ignoring coordination

Answer

Analyzing kinematics and kinetics

Answer

Maximizing joint angles

Answer

Reducing unnecessary muscle activation

Question 20

Which factor CANNOT be modified to improve skilled movement performance?

Accepted Answer

Genetics

Answer

Skill level

Answer

Environmental conditions

Answer

Training and practice

Question 21

Which of the following is not a core concept in biomechanics?

Accepted Answer

Teleology

Answer

Kinematics

Answer

Kinetics

Answer

Energetics

Question 22

Movements occurring around a joint are termed as:

Accepted Answer

Rotations

Answer

Translations

Answer

Flexions

Answer

Extensions

Question 23

Which factor does NOT influence the range of motion at a joint?

Accepted Answer

Ambient temperature

Answer

Joint structure

Answer

Ligaments

Answer

Muscles

Question 24

The law of conservation of angular momentum states that:

Accepted Answer

The total angular momentum of an isolated system remains constant.

Answer

Angular velocity of a spinning object remains constant.

Answer

The angular acceleration direction is always opposite to the angular velocity direction.

Answer

The angular displacement of a rotating object is directly proportional to applied torque.

Question 25

To analyze movement kinematics, which technique is commonly employed?

Accepted Answer

Motion capture

Answer

Electromyography (EMG)

Answer

Force plate analysis

Answer

Transcranial magnetic stimulation (TMS)

Question 26

The study of mechanical properties of biological tissues is known as:

Accepted Answer

Mechanobiology

Answer

Kinesiology

Answer

Biomaterials science

Answer

Ergonomics

Question 27

Which of the following is NOT a fundamental principle of biomechanics?

Accepted Answer

Thermo-dynamics

Answer

Newton's Laws of Motion

Answer

Conservation of energy

Answer

Anatomical structure

Question 28

Which type of joint provides the most extensive range of motion?

Accepted Answer

Ball-and-socket joint

Answer

Hinge joint

Answer

Pivot joint

Answer

Saddle joint

Question 29

Which of the following forces opposes motion?

Accepted Answer

Friction

Answer

Gravity

Answer

Inertia

Answer

Tension

Question 30

Which muscle is primarily responsible for bending the knee?

Accepted Answer

Hamstrings

Answer

Quadriceps

Answer

Gastrocnemius

Answer

Tibialis anterior

Question 31

Which variable is NOT measured in kinematics?

Accepted Answer

Force

Answer

Displacement

Answer

Velocity

Answer

Acceleration

Question 32

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

Accepted Answer

Resistance to rotation

Answer

Mass

Answer

Velocity

Answer

Acceleration

Question 33

Which of the following is NOT a type of lever found in the human body?

Accepted Answer

Fourth-class lever

Answer

First-class lever

Answer

Second-class lever

Answer

Third-class lever

Question 34

Which of the following joints allows for the greatest range of motion?

Accepted Answer

Ball-and-socket joint

Answer

Hinge joint

Answer

Pivot joint

Answer

Saddle joint

Question 35

Which muscle group is primarily responsible for extending the hip during the running gait cycle?

Accepted Answer

Gluteal muscles

Answer

Calves muscles

Answer

Hamstring muscles

Answer

Quadriceps muscles

Question 36

What is the primary role of the Achilles tendon in the jumping motion?

Accepted Answer

Transmits force from the calf muscles to the calcaneus bone, propelling the body upwards.

Answer

Provides stability to the ankle joint during the takeoff phase.

Answer

Prevents excessive dorsiflexion of the foot during landing.

Question 37

Which type of joint permits movement in multiple planes and provides the greatest range of motion?

Accepted Answer

Ball-and-socket joint

Answer

Condyloid joint

Answer

Pivot joint

Answer

Hinge joint

Question 38

In the context of projectile motion, which factor primarily determines the initial velocity of a thrown object?

Accepted Answer

Velocity of the arm at the moment of release

Answer

Angle of projection

Answer

Mass of the object

Answer

Height of the release point

Question 39

During a bodyweight squat exercise, the quadriceps muscles are primarily responsible for which action?

Accepted Answer

Extending the knee joint

Answer

Abducting the hip joint

Answer

Rotating the hip joint

Answer

Flexing the knee joint

Question 40

Which mechanism plays the primary role in absorbing impact forces during running?

Accepted Answer

Eccentric muscle contractions

Answer

Hydrostatic pressure

Answer

Concentric muscle contractions

Question 41

Isometric strength refers to the muscle's ability to generate force:

Accepted Answer

Regardless of muscle length

Answer

While the muscle is lengthening

Answer

Through a full range of motion

Answer

While the muscle is shortening

Question 42

What is the force that acts in opposition to the direction of motion?

Accepted Answer

Friction

Answer

Gravity

Answer

Momentum

Answer

Inertia

Question 43

Which type of joint action allows for the rotation of a limb?

Accepted Answer

Rotation

Answer

Extension

Answer

Flexion

Answer

Abduction

Question 44

What is the main role of the hamstring muscle group?

Accepted Answer

Flex the knee and extend the hip

Answer

Extend the knee and flex the hip

Answer

Adduct the hip and flex the knee

Answer

Abduct the hip and extend the knee

Question 45

What is the standard unit of force in the International System of Units (SI)?

Accepted Answer

Newton

Answer

Erg

Answer

Watt

Answer

Joule

Question 46

What is the primary purpose of using force plates in biomechanics?

Accepted Answer

To measure ground reaction forces

Answer

To measure velocity

Answer

To measure joint angles

Answer

To measure muscle activity

Question 47

The moment of inertia of a body is an indicator of its:

Accepted Answer

Resistance to rotation

Answer

Velocity

Answer

Acceleration

Answer

Mass

Question 48

What is the primary function of the knee joint during the stance phase of gait?

Accepted Answer

Stabilization and shock absorption

Answer

Propulsion

Answer

Dorsiflexion

Answer

Supination

Question 49

What is the primary role of the quadriceps muscle group in skilled movements?

Accepted Answer

Knee extension and stabilization

Answer

Ankle inversion

Answer

Shoulder adduction

Answer

Hip flexion

Question 50

The concept of 'degrees of freedom' in biomechanics refers to:

Accepted Answer

The number of independent movements that a joint can perform

Answer

The force acting on a joint

Answer

The range of motion of a joint

Question 51

Which of the following factors is NOT a determinant of center of mass?

Accepted Answer

Body size

Answer

Gravity

Answer

Body shape

Answer

Mass distribution

Question 52

What is the significance of the 'double-support phase' in gait analysis?

Accepted Answer

It provides stability and propulsion

Answer

It is the only phase where both feet are on the ground simultaneously

Answer

It is the most metabolically efficient phase of gait

Answer

It allows for maximum stride length

Question 53

Which of the following is a key principle of optimization in skilled movement?

Accepted Answer

Minimizing energy expenditure

Answer

Producing the greatest force

Answer

Maximizing speed

Answer

Achieving the highest accuracy

Question 54

What is the purpose of using electromyography (EMG) in biomechanics?

Accepted Answer

To measure muscle activity

Answer

To calculate ground reaction forces

Answer

To determine joint angles