WorksheetsBiomechanics Quiz
Total questions: 20
Worksheet time: 10mins
Which of the following best differentiates kinematics from kinetics?
Kinematics studies the forces producing motion, kinetics studies displacement.
Kinematics studies displacement and velocity, kinetics studies forces.
Kinematics includes both motion and forces, kinetics is only equilibrium.
Kinematics studies static systems, kinetics studies dynamic systems.
A joint motion where all points of a bone move through the same angle, at the same time, at a constant distance from the axis is best described as:
Translatory motion
Curvilinear motion
Rotatory (angular) motion
Gliding motion
In human movement, translatory and rotatory motions most commonly occur:
Independently
Together in combination
Only in linear movements
Only in sagittal plane activities
When the humerus moves in a circular arc while simultaneously shifting through space during shoulder abduction, the motion is:
Pure rotation
Curvilinear
Translatory
Static equilibrium
Gliding motion between articular surfaces is classified as:
Rotatory
Curvilinear
Translatory
Dynamic motion with angular displacement
A movement in the sagittal plane occurs around which axis?
Longitudinal
Mediolateral
Anteroposterior
Vertical
If the femur moves laterally away from the midline (hip abduction), which plane and axis are involved?
Sagittal plane, vertical axis
Frontal plane, anteroposterior axis
Transverse plane, longitudinal axis
Frontal plane, mediolateral axis
Compression forces are best defined as:
Forces moving a segment away from the joint
Forces directed parallel to the joint plane
Forces directed toward the joint, increasing contact
Rotational forces applied at a distance from the axis
A force applied by a therapist pushing a patient’s limb externally is classified as:
Internal force
External force
Frictional force
Resultant vector force
Muscular contraction stabilizing the body against gravity is an example of:
External force
Internal force
Shear force
Tensile force only
Which factor does not define a force vector?
Point of application
Magnitude
Action line and direction
Plane of motion
A 10 N force applied at a 90° angle to a lever arm of 0.2 m generates what torque?
2 Nm
0.5 Nm
20 Nm
5 Nm
If a body remains at rest despite external forces, which branch of mechanics explains this state?
Dynamics
Kinetics
Statics
Kinematics
Which describes an object sliding along a flat articular surface with no rotation?
Curvilinear
Gliding
Rotatory
Mixed motion
When analyzing movement, positive translatory motion typically refers to:
Movement downward or leftward
Movement upward or rightward
Rotation clockwise
Any displacement relative to the axis
According to Newton’s second law, force is proportional to:
Velocity
Mass × acceleration
Mass ÷ acceleration
Momentum ÷ time
Which of the following is an example of an internal force?
Gravity pulling the arm downward
Therapist applying resistance to elbow flexion
Quadriceps contracting during knee extension
Wind resistance during running
Which motion type is least common in human joints?
Rotatory
Curvilinear
Translatory (pure linear)
Combination motion
When describing motion in biomechanics, the axis of rotation is always:
Parallel to the plane of motion
Perpendicular to the plane of motion
Tangential to the curved path
Random, depending on external forces
The length of a force vector arrow in a diagram represents:
Point of application
Action line
Magnitude of force
Direction of force
