Week 2 Kinematics and Kinetics

What is kinematics in biomechanics concerned with?

• Understanding the forces acting on bodies
• Describing how bodies move without considering forces
• Analyzing muscle activation during movement
• Investigating the effects of gravity on motion

Which kinematic variable represents the distance covered in a specific direction?

• Speed
• Acceleration
• Displacement
• Velocity

In which plane does lateral rotation of the spine occur?

• Sagittal plane
• Transverse plane
• Frontal plane
• Medial plane

When describing motion, what is the rate of change of distance upon time called?

• Displacement
• Speed
• Velocity
• Acceleration

What term describes a combination of translatory and rotatory motion?

• Translatory motion
• Rotatory motion
• Combined motion
• Angular motion

What is the reference point for movement in the human body?

• Center of rotation
• Center of acceleration
• Center of mass
• Center of inertia

In which plane does abduction and adduction of the arm occur?

• Sagittal plane
• Transverse plane
• Frontal plane
• Medial plane

What is the difference between displacement and distance?

• Displacement considers direction, distance does not
• Displacement considers speed, distance does not
• Displacement is a scalar, distance is a vector
• Displacement is a vector, distance is a scalar

What term describes how bones move in relation to each other?

• Osteokinematics
• Arthrokinematics
• Kinetic motion
• Dynamic motion

What are vectors in kinematics?

• Quantities that only have magnitude
• Quantities that have magnitude and direction
• Quantities that describe distance only
• Quantities that describe speed and time