QUIZ ONE 1.) What are scalar and vector? Explain using an example for each. Scalar - a quantity that can be described with a single number, including any digits, giving its size or magnitude. Vector- a quantity that deals inherently with both magnitu
PHYSICS 203A
WELCOME!
WHY would someone want a career in PHYSICS?
Employment: Physicists
as a group are
PROBLEM SOLVERS.
Employers seek people
with this ability.
Objectives of Physics
find the limited number of fundamental laws
that govern natural phenom
VECTORS
Cartesian and Polar Coordinates
What is a scalar quantity?
What is a vector quantity?
Vector addition and subtraction
Vector and unit vector notation
Dot Product or scalar product
Cross Product or vector product
Coordinate Systems
Used to describe
Motion in 2-D (in a plane)
Producing An Acceleration
Various changes in a particles motion may
produce an acceleration
The magnitude of the velocity vector may change
The direction of the velocity vector may change
Even if the magnitude remains constant
NEWTONS LAWS OF MOTION
Why things move: dynamics
What will
we learn in
this
chapter?
Force
Newtons Three laws
Rigid Bodies
States of Equilibrium
Classes of Forces
Contact forces involve
physical contact
between two objects
Field forces act
through empty
MOTION IN 1 DIMENSION
(straight-line)
Describing the motion
0. Point objects and time intervals
1. Where is it? How far and which way? DISPLACEMENT
2. How fast and which way is moving? VELOCITY
3. Is the motion changing? ACCELERATION
Mechanics deals with