Biomechanics and Lever Systems Quiz

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Which plane rotates around the vertical axis?

Sagittal plane

Oblique plane

Frontal plane

Transverse plane (correct)

What characterizes a second class lever?

The effort is in the middle

The load is in the middle (correct)

The load is at one end

The fulcrum is at one end

Which of the following is an example of a first class lever?

Kicking a football

Rowing with an oar (correct)

Performing a calf raise

Paddle stroke

Which plane rotates around the sagittal axis?

Frontal plane (A) Signup and view all the answers

What is true about a third class lever?

The effort is in the middle (B) Signup and view all the answers

What is the anatomical position characterized by?

Body is erect with arms down and palms facing forward. (A) Signup and view all the answers

Which activity is an example of movement in the transverse plane?

Pirouette in dance (D) Signup and view all the answers

Which axis of movement correlates with a cartwheel?

Sagittal axis (A) Signup and view all the answers

What type of movement occurs primarily in the frontal plane?

Backflip (A) Signup and view all the answers

What is the purpose of biomechanics?

To study the movements of the human body. (A) Signup and view all the answers

What are energy leaks primarily caused by?

Poor movement economy (A) Signup and view all the answers

What is the main goal for coaches and athletes regarding energy leaks?

To enhance skill execution (D) Signup and view all the answers

How do energy leaks affect movement towards a goal?

They lead to ineffective movement (A) Signup and view all the answers

What is a likely activity that coaches and athletes engage in to combat energy leaks?

Working on efficient techniques (D) Signup and view all the answers

Which statement best describes energy leaks in the context of physical activity?

They indicate wasted energy in movement. (C) Signup and view all the answers

What characterizes a lever operating under mechanical advantage?

The effort arm is longer than the load arm. (B), The lever requires less force than the load. (C) Signup and view all the answers

Which statement describes mechanical disadvantage?

A larger force is needed to overcome the load. (C) Signup and view all the answers

Which of the following is an example of a vector?

Displacement (D) Signup and view all the answers

What distinguishes a scalar from a vector?

A scalar has magnitude only, with no consideration for direction. (D) Signup and view all the answers

In an example of a quarterback throwing a football, which elements constitute a vector?

The speed of the ball and the direction thrown. (A) Signup and view all the answers

What is inertia in the context of motion in sports?

The tendency of a body to remain at rest or in uniform motion. (A) Signup and view all the answers

Which of the following best describes gravity's role in sports?

It pulls the athlete's body downward, affecting their movement. (C) Signup and view all the answers

How does movement economy benefit highly trained athletes?

It enables them to sustain efforts longer due to reduced energy expenditure. (D) Signup and view all the answers

What is the impact of effective technique expenditure on an athlete's performance?

It allows for the correct application of forces produced by the athlete. (D) Signup and view all the answers

Which of the following is an example of fluid force resistance in sports?

The resistance faced by a swimmer in water. (B) Signup and view all the answers

What does Newton's 1st Law state about a body in motion?

It will continue moving in the same direction unless acted upon by an external force. (C) Signup and view all the answers

How does Newton's 2nd Law describe the relationship between force, mass, and acceleration?

Force equals mass times acceleration. (D) Signup and view all the answers

Which example best illustrates Newton's 3rd Law?

A football being kicked into the air after contact. (B) Signup and view all the answers

What is a consequence of Newton's 1st Law when a golf ball is on a tee?

The ball will remain at rest until a player strikes it. (D) Signup and view all the answers

Which of the following scenarios best depicts Newton's 2nd Law in action?

An empty cart is easier to push than a full one. (C) Signup and view all the answers