Sophia Learning
Sophia: Improperly Defining a System
This presentation explains why a poorly defined system can lead to incorrect answers in physics problems.
Sophia Learning
Sophia: Properly Defining a System
This slide show illustrates how to properly define a system of forces.
Sophia Learning
Sophia: System of Particles in an Object
This presentation explains why an object remains at rest, despite the fact that the particles within the object are in motion.