Question 1: Define biomechanics in the context of physical education.

Answer: Biomechanics is the study of how the bones, muscles, and joints work together to produce movement, including the effects of forces on the body.

Question 2: Describe the role of gravity when a person jumps vertically into the air.

Answer: Gravity pulls the person downward, opposing the upward force generated by the leg muscles, eventually causing the person to land back on the ground.

Question 3: Explain what is meant by 'force' in biomechanics and give an example related to running.

Answer: Force is a push or pull that causes movement or change in motion. For example, when running, the force exerted by the foot against the ground propels the runner forward.

Question 4: Identify and describe the movement pattern used when performing a squat.

Answer: A squat involves bending the hips, knees, and ankles to lower the body while keeping the back straight, then straightening the legs to return to a standing position.

Question 5: Draw a simple diagram showing the correct body position when executing a forward roll.

Answer: A correct sketch would show a person curled into a ball with the chin tucked into the chest, rolling forward along the back, with arms tucked in and legs bent.

Question 6: Explain how levers work in the human body with an example from sports or exercise.

Answer: Levers in the body are bones that act as bars, with joints acting as fulcrums. For example, during a bicep curl, the forearm acts as a lever, with the elbow joint as the fulcrum, lifting the weight.

Question 7: Describe the difference between a static and a dynamic movement, providing an example of each.

Answer: A static movement involves holding a position without moving, such as a plank. A dynamic movement involves movement, such as running or jumping.

Question 8: Sketch a diagram illustrating the basic movement of a ball being thrown upwards. Label the key parts of the motion.

Answer: The sketch should depict a ball rising, with an arrow indicating upward force, the hand releasing the ball, and labels for 'initial force', 'trajectory', and 'force of gravity'.

Question 9: Explain why understanding biomechanics can help improve an athlete’s performance.

Answer: Understanding biomechanics helps athletes optimize their movements, reduce the risk of injury, and perform techniques more efficiently by analyzing forces and body positions.

Question 10: Identify two ways in which force can be increased during a jump.

Answer: Force can be increased by pushing off the ground with greater strength and increasing the duration of contact with the ground during takeoff.

Question 11: Describe the importance of joint flexibility in movement and give an example of a sport where it is essential.

Answer: Joint flexibility allows for a greater range of motion, improving performance and reducing injury risk. For example, in gymnastics, flexibility is essential for performing splits and flips.