AP Physics Chapter 4 Study Guide
Forces and Newton's Laws of Motion
What Causes Motion?
Newton's First Law
Consider an object with no force acting on it. If it is at rest, it will remain at rest; if it is moving, it will continue to move in a straight line at constant speed.
Force
A force is a push or a pull
A force acts on an object
A force requires an agent
A force is a vector
A force can be either a contact force
or a long-range force
Drawing force vectors
Combining Forces
A short catalog of forces
Weight
Spring Force
Tension
Normal Force
Friction
Drag
Thrust
Electric and Magnetic Force
Identifying Forces
Newton's Second Law
Free-Body Diagrams
Elevator Example
Rocket Ice
Skier
Newton's Third Law
Interacting forces:
Action/reaction pair
Newton's Third Law:
Every force occurs as one member of an action/reaction pair of forces.
*The two members of an action/reaction pair act on two different
objects.
*The two members of an action/reaction pair point in opposite directions,
and are equal in magnitude.
External forces and Internal Forces
Propulsion
