Anatomy and physiology - Newtons laws Flashcards
What is Newton’s first law?
Law 1 - INERTIA- A body will remain at rest or uniform velocity until an external force is applied.
Example (Body) will remain on spot until force (external force) kicks it. (Penalty kick in football)
What is Newtons second law?
Law 2- ACCELERATION The rate of change of momentum is directly proportional to the size of the force and the direction the forces is applied.
SIZE The greater the force applied to the ball the faster the ball will accelerate towards the goal.
DIRECTION- If the force applied through the COM (centre of mass) the ball will travel in a straight line (linear motion/direct force) If the force is applied outside the ball will curve( angular motion/eccentric force)
What is Newtons third law?
Law 3- ACTION REACTION every action has an equal and opposite reaction.
