Biomechanics of Movement: Master the Mechanics of Efficient Movement

Question 1

A force acting perpendicularly to the axis of a rotating object produces a:

Accepted Answer

Moment

Answer

Linear force

Answer

Friction

Answer

Impulse

Question 2

The law of inertia states that an object at rest will remain at rest unless acted upon by an:

Accepted Answer

External force

Answer

Internal force

Answer

Contact force

Answer

Gravitational force

Question 3

Which type of joint allows for the greatest range of motion?

Accepted Answer

Ball-and-socket joint

Answer

Hinge joint

Answer

Pivot joint

Answer

Condyloid joint

Question 4

The moment arm is defined as the perpendicular distance from the axis of rotation to the:

Accepted Answer

Line of action of the force

Answer

Center of gravity

Answer

Fulcrum

Answer

Plane of motion

Question 5

The acceleration of a body is directly proportional to the:

Accepted Answer

Net force acting on it

Answer

Mass of the body

Answer

Velocity of the body

Answer

Coefficient of friction between the body and the surface

Question 6

The centre of gravity of the human body is located:

Accepted Answer

Slightly anterior to the second sacral vertebra

Answer

At the center of the pelvis

Answer

At the level of the umbilicus

Answer

At the base of the skull

Question 7

The range of motion at a joint is limited by:

Accepted Answer

Ligaments, joint capsule, muscle length, and bone shape

Answer

Ligaments and tendons only

Answer

Muscles and tendons only

Answer

Bones and ligaments only

Question 8

The principle of specificity in exercise science can be explained as:

Accepted Answer

Training should specifically target the desired outcome.

Answer

Training should be varied to prevent boredom.

Answer

Training should gradually increase in intensity and duration.

Question 9

The power produced by a muscle is calculated as:

Accepted Answer

Force multiplied by Velocity

Answer

Distance multiplied by Velocity

Answer

Force multiplied by Distance

Question 10

The energy stored in a stretched muscle is referred to as:

Accepted Answer

Elastic energy

Answer

Potential energy

Answer

Gravitational energy

Question 11

Which force directly opposes the direction of an object's motion?

Accepted Answer

Friction

Answer

Gravity

Answer

Inertial force

Answer

Tension

Question 12

At the peak of a long jump, which joint moment is most significant?

Accepted Answer

Ankle extension

Answer

Knee flexion

Answer

Elbow extension

Answer

Hip flexion

Question 13

Which lever system is used in a hammer when striking a nail?

Accepted Answer

Third-class lever

Answer

First-class lever

Answer

Second-class lever

Answer

Compound lever

Question 14

A sprinter exerts 1000 N of force against the ground. If the ground exerts an equal and opposite reaction force, what is the net force acting on the sprinter?

Accepted Answer

0 N

Answer

1000 N

Answer

2000 N

Answer

-1000 N

Question 15

The moment of inertia of a body is directly proportional to its:

Accepted Answer

Mass

Answer

Velocity

Answer

Acceleration

Answer

Force

Question 16

Which muscle action overcomes gravity to rotate a joint?

Accepted Answer

Concentric

Answer

Eccentric

Answer

Isometric

Answer

Isokinetic

Question 17

According to the principle of superposition, multiple forces acting on a body:

Accepted Answer

Can be combined to determine the overall net force.

Answer

Act independently and do not influence each other.

Answer

Must always result in a zero net force.

Answer

Must always act in the same direction.

Question 18

What is the standard unit of measurement for moment?

Accepted Answer

Newton-meter (Nm)

Answer

Kilogram-force (kgf)

Answer

Pound-foot (lb-ft)

Answer

Joule (J)

Question 19

Which of the following factors does NOT influence the magnitude of the resultant moment?

Accepted Answer

Shape of the object

Answer

Magnitude of the force applied

Answer

Distance of the force from the axis of rotation

Answer

Direction of the force applied

Question 20

What is a potential benefit of using a first-class lever?

Accepted Answer

Increases force

Answer

Reduces force

Answer

Increases speed

Answer

Reduces speed

Question 21

Which of the following exercises represents a closed kinetic chain activity?

Accepted Answer

Squat

Answer

Bicep curl

Answer

Bench press

Answer

Leg extension

Question 22

What is the name of the joint motion that involves decreasing the angle between two bones?

Accepted Answer

Flexion

Answer

Extension

Answer

Abduction

Answer

Adduction

Question 23

What is the main function of the Golgi tendon organ?

Accepted Answer

To sense muscle tension

Answer

To initiate muscle contraction

Answer

To maintain joint stability

Answer

To regulate blood pressure

Question 24

In biomechanics, how does the center of mass influence balance and movement control?

Accepted Answer

The center of mass is the point where all forces acting on the body are balanced.

Answer

The center of mass is always located at the body's center.

Answer

The center of mass has no impact on balance or movement control.

Question 25

When analyzing human movement, the center of mass is often used as a reference point. What is the **primary reason** for this?

Accepted Answer

It represents the point where all external forces acting on the body can be applied

Answer

It is the point with the greatest mass

Answer

It is the point with the lowest velocity

Question 26

A long jumper takes off at a velocity of 10m/s and lands with a velocity of -5m/s. What is the **average acceleration** experienced by the jumper during the jump?

Accepted Answer

-1.67m/s²

Answer

10m/s²

Answer

-10m/s²

Answer

1.67m/s²

Question 27

A dancer performs a pirouette. Which of the following body systems is **primarily** responsible for maintaining balance during the turn?

Accepted Answer

Vestibular system

Answer

Muscular system

Answer

Cardiovascular system

Answer

Skeletal system

Question 28

Contraction of a muscle produces which type of force?

Accepted Answer

Tensile force

Answer

Compressive force

Answer

Gravitational force

Question 29

Which of the following does NOT influence the length of a lever arm?

Accepted Answer

Muscle belly size

Answer

Length of the muscle

Answer

Insertion point of the muscle

Answer

Angle of the joint

Question 30

What is the primary role of an antagonistic muscle pair in movement?

Accepted Answer

Provide resistance and control

Answer

Enhance flexibility and range of motion

Answer

Provide additional stability to the joint

Answer

Generate the primary force for movement

Question 31

Which of the following measures the body's resistance to rotation?

Accepted Answer

Moment of inertia

Answer

Force

Answer

Velocity

Answer

Acceleration

Question 32

Which of the following accurately describes an advantage of using MCQs in biomechanics assessments?

Accepted Answer

Objective and reliable evaluation of understanding

Answer

Encouragement of rote memorization

Answer

Promotion of creative thinking

Answer

Assessment of practical skills

Question 33

Which principle states that the force acting on an object equals the object's mass multiplied by its acceleration?

Accepted Answer

Newton's Second Law of Motion

Answer

Law of Conservation of Energy

Answer

Newton's Third Law of Motion

Answer

Newton's First Law of Motion

Question 34

What is the primary advantage of utilizing computer simulations in studying biomechanical principles?

Accepted Answer

Allows for controlled experimentation and in-depth analysis

Answer

Provides an exact representation of real-life movement

Answer

Offers immediate feedback to learners

Answer

Eliminates the need for ethical considerations