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Impulse
Accumulated effect of force application over time
I=FxT
Area under the force-time curve
Vector quantity
Units Nxs
Momentum
Amount of motion that is a product of mass and velocity
Vector quantity
Unit:kg x m / s
force magnitude and duration of force application
Impulse-momentum relationship accounts for
change in momentum
Impulse causes…
static equilibrium
the sum of all forces and torques in a system = 0. it is at rest or moving at a constant velocity.
Conservation of momentum
An object will either stay at rest or continue at current velocity if moving.
adjusting force and/or time components to perform better
How do you maximize impulse?
methods to increase impulse
Increase force magnitude, force duration, or repeated force application
Integration
process of taking tiny, simple sections of the total curve
Angular momentum
amount of angular motion
center of percussion
the “sweet spot” when striking an object, rotation only occurs about an axis of rotation and not any other point.
coefficient of restitution
ratio of velocities before/after impact
determined by mechanical properties of each material involved
