Chapter 11

Question 1

What is Biomechanics?

Answer 1

Biomechanics is a branch of kinesiology that focuses on understanding how the human body behaves and functions when forces act upon it. In simple terms, biomechanics is the physics behind physical movement and sports.

Question 2

External Forces

Answer 2

Definition: Forces that originate outside the body or system being studied.
Examples:
* Gravity: Affects the body by pulling it towards the ground, crucial in activities like jumping or falling.
* Wind Resistance: Opposes forward motion in running or cycling.
* Surface Friction: Impacts movement, such as providing traction for running like cleats for soccer

Question 3

Internal Forces

Answer 3

• Definition: Forces that come from inside the body.
• Examples:
  
  • Muscle Contraction: Muscles create force to move bones, like when lifting weights or running.
  • Ligament Tension: Ligaments provide support and stabilize joints during actions like squats or throwing a ball.
• Effect on Movement: These forces make body movements possible, helping with coordination and support during activities.