Question 1: Define the term 'biomechanics' in the context of physical activity.

Answer: Biomechanics is the study of how the principles of physics and mechanics apply to the movement of the human body during physical activity.

Question 2: Explain how the length of a lever influences the force needed to move an object or part of the body.

Answer: A longer lever increases the mechanical advantage, making it easier to move objects or body parts with less force required, whereas a shorter lever requires more force.

Question 3: Describe the main types of levers found in the human body and give an example of each.

Answer: Type 1 lever has the fulcrum in the middle, like nodding the head. Type 2 lever has the load in the middle, such as standing on tiptoe. Type 3 lever has the effort in the middle, like during bicep curls.

Question 4: Identify which type of lever is used when performing a bicep curl and justify your answer.

Answer: A Type 3 lever is used because the effort (bicep muscle) is applied between the fulcrum (elbow joint) and the load (hand holding the object).

Question 5: Explain how increasing the angle of joint movement can affect movement efficiency.

Answer: Increasing the angle can improve range of motion but may reduce force efficiency if the movement becomes too extreme, making muscles work harder or less effectively.

Question 6: Describe two ways that understanding biomechanics can help improve sports performance.

Answer: It can help athletes optimize their movement technique for efficiency and reduce injury risk by understanding how forces act on their bodies.

Question 7: Draw a simple diagram of a human joint showing the bones, muscles, and the direction of movement.

Answer: A correct sketch should depict two bones connected at a joint, with muscles attached around the joint. Arrows should indicate the direction of movement when the muscles contract.

Question 8: Sketch a diagram illustrating how a lever works in a human arm during a push-up. Include the fulcrum, effort, and load.

Answer: A correct sketch includes the elbow joint as the fulcrum, the effort applied by the arm muscles (near the shoulder), and the load (body weight). Arrows indicate the force and movement.

Question 9: List three factors that can influence the efficiency of movement in sport.

Answer: Strength, flexibility, and technique.

Question 10: Explain why understanding the principles of biomechanics is important for preventing sports injuries.

Answer: It helps athletes understand proper movement patterns, avoid overloading joints and muscles, and correct faulty techniques that could cause injuries.