Chapter 3: Vectors and Coordinate
Systems
A quantity that is fully described by a single number (with units) is called a scalar
quantity. A quantity with both a size and a direction is called a vector quantity.
3.1 Vectors:
The mathematical term for the
2: Conservation Laws:
Part II will now focus on things that stay the same as other things around them change.
A quantity that stays the same throughout an interaction is said to be conserved.
Law of Conservation of Mass: The total mass in a closed syst
Chapter 11: Work
How many kinds of energy are there?
Under what conditions is energy conserved?
How does a system gain or lose energy?
For example bobsleds gain kinetic energy when the runners are pushing it faster and
faster, but it is not losing any pot
8: Dynamics II Motion in a Plane
8.1 Dynamics in Two Dimensions:
ax=(Fnet)x/m and ay=(Fnet)y/m
Suppose the x- and y-components of acceleration are independent of each other. That is,
ax, does not depend on either y or vy, and similarly ay does not depen
Chapter 10: Energy
The purpose of this chapter is to introduce the two most fundamental forms of energy,
kinetic energy and potential energy.
10.1: A Natural Money Called Energy
Energy Into System Readily available energy K/Stored Energy U/Total Energy
E
Lets define the elastic potential energy Us of a spring to be: . An object moving on a
spring obeys the conservation of energy equation (without friction).
Because is squared, the elastic potential energy is positive for a spring that is either
stretched
5. FORCE AND MOTION
When an object all of a sudden changes its velocity and/or direction, we can always find an
interaction between that object and its surroundings that is responsible for this change. We state
that the surroundings exert a force on the o
Chapter 4: Kinematics in Two
Dimensions
Extending things from 1 dimension
In 1 dimension, we wrote down some general equations relating velocity to
displacement, and relating acceleration to the change in velocity. We also wrote down
the four equations th
Chapter 2: Kinematics in One Dimension
Kinematics is the modern name for the mathematical description of motion without
regard to causes.
2.1 Uniform Motion
Straight-line motion in which equal displacements occur during any successive equaltime intervals
Chapter 7 Newtons Third Law:
7.1 Interacting Objects:
An interaction is the mutual influence of two objects on two other. To be more specific, if
object A exerts a force F(a on b) on object B, then object B exerts a force F(b on a) on
object A. This pair
Chapter 1: Concepts of Motion
1.1 Motion Diagrams:
Lets define motion as a change of an objects position with time. The path along which an
object moves, which might be a straight line or might be curved, is called the objects
trajectory.
A composite ph