Types of Collisions
- Elastic
- "Hard collisions"
- No deformation
- No Energy Lost
- Inelastic
- Objects bounce off each
- Deformation occurs
- Energy is lost
- Perfectly Inelastic
- Objects stick together
- Deformation occurs
- Energy is lost
Impulse
Impulse
- J
- Force exerted time
- F*Delta T
- Area under vs Time graph
- Change in Momentum
Momentum
- How hard it is to stop something
- Not inertia
- P
- Mass*Velocity
- Vector with same direction as velocity
- LIL Charts show change in momentum similar to LOL charts show energy.
- Left side it starting momentum, the I shows the impulse, and second L shows final momentum
Conservation of Momentum
- Momentum is conserved within an isolated system
- pi=pf
- In open systems pi + J = pf
- Center of mass of system always has the same momentum
- Center of mass is average position of mass in the system
Relating Momentum, Energy, Forces, and Kinematics
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