Review Lectures 25-29
Stress the pressure that causes a deformation
Strain measure of the relative deformation (elongation, shortening, compression,
expansion, twisting, shearing)
Review Final Exam
And this gospel of the kingdom [
Work and Energy
Then the elders of the town nearest the body shall take a heifer
that has never been worked and has never worn a yoke,
and lead her down to a valley that has not been plowed or
planted and where there is
Conservation of Energy and
He gives strength to the weary and increases the power of the weak.
-Isaiah 40:29 (NIV)
Review from the last few days:
W = Fd d
Work done on an object equals the component of the net applied
force in the directi
Up to now, we have been dealing only with constant forces.
But, in many instances the force on an object is not constant in time.
Take collisions, for example. In a collision the forces are very complicated.
Impulse and Linear
Lets analyze the motion of projectiles launched into the air, but this time, the motion
is not completely vertical 2-D projectile motion.
Launch angle = 90o
Then David put his hand i
What is friction?
Friction is a contact force on
Acting opposite the direction of
motion (or impeding motion) of
" Due to surface contact between
the body and its support.
One Sabbath Jesus was going through the gr
Isolate the object to be studied.
Draw a simplified diagram
Identify the forces acting on the object
The heart of the wise inclines to the right,
but the heart of the fool to the left.
Now we can apply the concepts of displacement, velocity, and acceleration to
describe the motion of objects.
Before we begin, lets make one more simplifying condition We will only deal
with objects that undergo constant acceleration.
Speed, Velocity and
Rejoicing in hope; patient in tribulation;
continuing instant in prayer
Romans 12:12 KJV
Concepts needed to describe
motion w/o forces (besides gravity)
Chs. 2 and 3
Deals with the
Units and Problem Solving
For assuredly, I say to you, till heaven and
earth pass away, one jot or one title will by no
means pass from the law till all is fulfilled.
-Matthew 5:18 NKJV
Introduction to Physics
Physics is an experimental science.
In all thy ways acknowledge him,
and he shall direct thy paths.
-Proverbs 3:6 KJV
Vectors versus Scalars
We all know that objects fall to the ground.
At present, we wont concern ourselves with why this happens, but what can
we say about the motion of objects in free-fall?
How objects fall have been studied by man for thousands of years.
300 BC Ari
Title: General Physics I (Trig. based)
9:00-9:50 AM, SFH 203
Instructor: Dr. Gary Case
Office: SFH 211; 951-785-2272
Office hours: 10:00-12:00 M-F or by appointment
Textbook: College Physics ,7th Ed. (Wilson,
Name: Q 5
General Physics (PHYS 231A)
Quiz 1 (10 pts)
A 1 izz-v.2
szxfx, v=-Ai 7 =v- v=at xf=x,.+v0t+at2 Ax=f '
At At 2 2a
The number of points for each question is given at the end of the question. You must show all of your work!
1. It is 21 mi
l. Multiple Choice [2 points each] It;
i? 1. In in = 2.54 cry. how many cfw_quiteoetits stein Lott seem i'il?
- Ii-_-_.-"'_'_F - _ _._
.4. use 5.2.54 is. sos @ssyf
t's voloeity change direction when its seeeierstion is eonstst'?
cfw_Q- I. Can an objet: