Linear Kinetic
Forces that cause movement.
What are kinetics?
Resistance of a body to rotation about a given axis.
What is moment of inertia?
How much motion an object has.
What is momentum?
A muscle contraction that causes no change to the joint angle.
What is isometric?
This law states for every action there is an equal and opposite reaction.
What is Newton's Third Law?
This law states "Force equals mass times acceleration."
What is Newton's Second Law?
The distance from axis of rotation to line of action of the force.
What is Moment Arm?
This axis of rotation runs left to right and parallel to the floor.
What is transverse?
Force exerted by a muscle fiber is greatest during this type of contraction.
What is an eccentric contraction?
This is the product of force and velocity.
What is Power?
This law states "If no external forces act on a body the velocity of the body remains constant."
What is Newton's 1st Law?
SI unit for moment of inertia.
What are kg*m2?
The location about which the mass of a body is evenly distributed.
What is Center of Mass (COM)?
As velocity increases the amount of force that can be produced during a concentric contraction does this.
What is decreases?
This axis runs from front to back and is parallel to the floor.
What is frontal?
If acceleration is constant and the mass of an object increases this must happen to the force being applied to the object.
What is increases?
This occurs when vGRF does not act through the body's center of mass (COM). It can be forwards or backwards.
What is somersaulting?
This type of twist is initiated when a person is not in contact with the ground.
What is a tilt twist?
If you were designing a muscle and you wanted the muscle to produce as much force as possible you would arrange the muscle fibers like this.
What is in parallel?
This is the product of force and the moment arm of the force or moment of inertia and angular acceleration.
What is Torque (aka moments)?
The segment of the body that contributes most to vGRF.
What is trunk and head?
When considering inertia, this is more important than the mass of the object.
What is the distribution of the mass?
The SI unit for torque.
What is Nm?
The advantage of this is that muscle can perform more positive work and produce more power if actively stretched before it shortens.
What is the Stretch-shorten cycle?
SI units for angular momentum.
What are kgm2/s?