linear kinetics
momentum definition
A measure of the amount of motion possessed by a moving body, the product of mass and velocity
what is COR
Measures the elasticity of the collision between an object and a given surface.
angular momentum formula
moment of inertia x angular velocity
impulse definition
The application of force over a period of time to change the momentum of an object.
3 factors affecting cor
temperature, velocity, equipment and surface
angular momentum
The quantity of angular motion possessed by a rotating body
Decreasing momentum
To reduce the momentum of an object, one typically looks to increase the time component.
increase temp = increase COR
moment of inertia
Refers to the resistance of a rotating object to change its state of motion
Increasing momentum
To maximise the momentum of an object, one must aim to increase both the force and time component
explain velocity of collision
increase velocity = increase in ball losing energy due to greater compression
moment of inertia formula
Moment of inertia = mass of the object * radius of rotation
What two applications of “impulse” can be applied to cheerleading throw
. Impulse to increase momentum on the throw
Impulse to decrease momentum on the catch
explain equipment and surfaces
condition of equipment, old vs new, condition of court
conservation of angular momentum
Indicates a rotating body will continue to rotate indefinitely unless an external force acts on it.