What is the primary difference between kinetics and kinematics?

Understanding Biomechanics Concepts

Quiz
•
Physical Ed
•
12th Grade
•
Hard

ormond heather
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kinetics studies the speed of objects; kinematics studies the forces acting on them.
Kinematics is concerned with energy; kinetics is concerned with velocity.
Kinematics involves forces; kinetics involves motion.
Kinetics involves forces; kinematics involves motion.
Answer explanation
The correct choice is that kinetics involves forces, while kinematics involves motion. Kinetics focuses on the causes of motion (forces), whereas kinematics describes the motion itself without considering the forces involved.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Define qualitative and quantitative approaches in biomechanics.
Qualitative approaches measure the speed of movement, while quantitative approaches evaluate the aesthetics of movement.
Qualitative approaches analyze the quality of movement, while quantitative approaches measure and analyze numerical data related to movement.
Qualitative approaches focus solely on numerical data, while quantitative approaches assess movement quality.
Qualitative approaches are only used in clinical settings, whereas quantitative approaches are used in sports science.
Answer explanation
The correct choice highlights that qualitative approaches focus on analyzing the quality of movement, while quantitative approaches involve measuring and analyzing numerical data related to movement, accurately defining both methods in biomechanics.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of Newton's laws states that an object in motion stays in motion?
Law of universal gravitation
Newton's second law of motion
Newton's third law of motion
Newton's first law of motion
Answer explanation
Newton's first law of motion states that an object in motion stays in motion unless acted upon by an external force. This law emphasizes the concept of inertia, which is not covered by the other laws listed.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain the concept of stability in biomechanics.
Stability in biomechanics is the ability to keep centre of gravity within base of support
Stability in biomechanics refers to the speed of movement.
Stability in biomechanics is solely about muscle strength.
Stability is the ability to increase force output during exercise.
Answer explanation
Stability in biomechanics is defined as the ability to keep the center of gravity within the base of support. This ensures balance and control during movement, making the first answer choice the correct one.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is segmental rotation and why is it important for movement?
It is the process of rotating the whole body in a circle, which improves speed but not balance.
Segmental rotation is the movement of body parts around their axes, crucial for coordination, balance, and range of motion.
Segmental rotation involves moving limbs in a straight line, mainly affecting strength.
Segmental rotation refers to twisting the spine only, which is not essential for movement.
Answer explanation
Segmental rotation refers to the movement of body parts around their axes, which is essential for coordination, balance, and range of motion, making it vital for effective movement.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During a physical education class, Noah is learning about the role of muscles. Identify the role of an agonist muscle during contraction.
The agonist muscle only assists in movement without contracting.
The agonist muscle stabilizes the joint without moving.
The agonist muscle relaxes during contraction.
The agonist muscle contracts to produce movement.
Answer explanation
The agonist muscle is responsible for contracting to produce movement. It actively engages during muscle contractions, enabling the desired motion, unlike the other options which misrepresent its role.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the function of an antagonist muscle?
The function of an antagonist muscle is to oppose the action of an agonist muscle, allowing for controlled movement.
To increase the strength of the agonist muscle.
To stabilize the joint during movement.
To assist the agonist muscle in its action.
Answer explanation
The correct choice highlights that antagonist muscles oppose agonist muscles, which is essential for controlled movement. This opposition helps prevent injury and allows for smooth, coordinated actions.
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