Biomechanical Movement - Biomechanical Principles Flashcards
How many laws of motion does newton have?
Three.
Define Newton’s first law of motion.
His first law states that a force is required to change the state of motion.
What does Newton’s second law of motion state.
That the magnitude (size) and direction of the force determines the magnitude and direction of the acceleration.
What does Newton’s third law of motion state.
That for every force exerted, there is an equal and opposite force acting on it.
Apply Newton’s first law of motion to sporting context.
In a penalty, the ball will remain stationary until the player exerts a force with their leg to move the ball.
Apply Newton’s second law of motion to sporting context.
When a tennis player serves the ball, the acceleration of the ball is proportional to the size of the force the player hits it with.
What is the formula for force?
Force = Mass x Acceleration ( have to write it down in full)
What is the formula for speed?
Distance divided by time
What is the centre of mass?
The point of balance in the body.
What is the line of gravity?
The line extending vertically downwards from the centre of mass.
What will a larger base of support result in?
A greater stability for the performer. E.g a boxer with a wide base of support will be hard to knock down unstable.
What happens when an athlete’s centre of mass is outside their body?
Their body will be unstable and prone to being unbalanced.
