PHYSICS 2001: Tentative Test 2 Formula Sheet
Units:
1 min = 60 s
1 hr = 60 min
1 day = 24 hr
1 mi = 5280 ft = 1.609 km
1 m = 39.4 in = 3.28 ft
1 hp = 550 ft-lb/s = 746 W
1 mph = 0.447 m/s
360 = 2 rad
1 N = 0.225 lb
1 atm L = 101.22 J
1 atm = 1.01x 105 Pa
3.4 Relative Velocity
Lets say that you are standing on the ground at rest beside a road, when a pickup truck
drives by you at 25 m/s.
vTG = 25 m/s
Relative to you, the truck is moving at 25 m/s (Velocity of the truck relative to the ground)
Now suppose t
In practice, we often refer to Newtons 2nd Law as just:
F = ma
We do this, however, with the following understanding:
do this however with the following understanding:
1. That this is a vector equation.
2. That F means the net, the total, the vector sum o
The moon moves in a nearly perfect circle around the earth.
Since its moving in a circle, its
velocity is changing.
v
v
Since its velocity is changing, there
must be an acceleration.
Since there is an acceleration, there
must be a force.
The same force th
Physics 2001 Formula Sheet 2, G = 6.67 x 1011 m3/(kgs2) Constants: g = 9.8 m/s b b 2 4 ac Quadratic Formula: 0 = at 2 + bt + c t= 2a 2 2 2 Law of Cosines: C = A + B 2 AB cos Vector Components: A = Ax x + Ay y Ax
4.9 Frictional Forces
Weve been discussing forces on objects who have surfaces in contact. The
Normal Force perpendicular to the surface.
Normal Force is perpendicular to the surface.
There is another force due to surfaces in contact in which the force is
Announcements Feb. 14 Thurs (10th)
I hate to say it, but HW #5 is awaiting you
TEST #1 Well? Ill try to get the scores posted by this afternoon
Shouts of joy? Feelings of so-so? Wailing and gnashing of teeth?
Quick Review
F acting on system = Fn
Announcements Feb. 21 Thurs (11th)
So Ive had some feelings of guilt so HW #5 is due Saturday night.
(But, look out HW#6 is long. Due next Thurs. )
Quick Review
F acting on system = Fnet = ma
TEST #1 How do we move forward from here?
We added +3 p
Ch. 3 Kinematics in 2D
Now lets consider the concepts of displacement, velocity, and acceleration in
2 dimensions.
dimensions.
1-D
x = x f xo
x x f xo
v=
=
t
t
v v f vo
a=
=
t
t
x f = xo + vot + 1 at 2
2
x =
2
v 2 vo
f
2a
2-D
vvv
r = rf ro
vv
v r r
v r
f
Example: You are driving along in the country at 90 km/hr, when you suddenly
notice a cow in the road 30 m ahead. You attempt to stop the car by pressing on
th
the brakes, but the distance is too short. With what velocity does the car hit the
th di
With
t
Announcements
Jan. 22, 2013 Tuesday (3rd )
Homework #1 - DUE Thurs. Remember, I said Id go over problems during the last part of
class time; if you have specic questions about HW, send me an email and I could address
common difculties during that time s
Announcements
Jan. 17, 2013 Thurs (2nd)
Have you Moodled? (88% have)
WileyPlus? (only 63% have) DONT Forget to add your LSU ID number when registering.
1.5 Vectors and Scalars
Scalars are quantities (including units) that give the size or magnitude
Final words: Physics
Dont get behind. You should do something between every lecture. This includes
spending quality time studying the material presented in the lecture, doing
HW problems, and READING AHEAD ( reading quizzes ?)
Physics PHYS2001
Spring
1. Humans can lose consciousness if exposed to accelerations greater than 7g. This is
particularly important for fighter jet pilots, who may experience forces of this magnitude
when making high-speed turns. Which of the following would be most effective a
PHYS2001 Practice Problems Exam 1
Fall 2010
1. Assume a quantity in physics was defined as (x2a3/v2) (acceleration cubed times
distance squared divided by velocity squared). What would be the units of such a
quantity?
a) m3/s4
b) m2/s2
c) s4/m
d) m/s4
e)
PHYS 2001 SPRING 2013 TEST #2 ANSWER KEY
Version:
Question #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
A
B
C
D
A
B
C
B
D
D
B
D
E
A
C
B
E
E
A
A
C
A
B
C
B
D
B
A
E
D
A
C
D
A
D
C
B
B
E
B
C
E
A
B
C
A
B
A
E
E
D
A
D
E
A
C
A
D
D
A
C
E
B
B
E
C
D
B
B
E
D
A
D
A
D
Practice Exam 1
1. During a relay race, runner A runs a certain distance due north and then hands off the
baton to runner B, who runs for the same distance in a direction south of east. The two
displacement vectors and can be added together to give a resu
Pre Lab 1
1.
Consider the following:
This picture represents high accuracy and high precision.
2.
Round the following uncertainties properly.
a. 0.003515 m
i. 0.004 m
b. 2444.0 m
i. 2000 m
3.
When reporting a measurement and its uncertainty, which of the
Announcements Feb. 26 Tues (12th)
Although I had a bit of sympathy last week, HW #6 is due on Thurs night. Email me if
you have questions and Ill try to go over them on Thurs.
TEST # 2 Less than two weeks! If youd like to do better on this test, start no
Announcements Feb. 28 Thurs (13th)
Ive put on a few additional tests and a tentative formula sheet on Moodle
Key formula
HW #6 is due tonight. Ill try to go over a few of them at the end.
TEST # 2 11 days from now If youd like to do better on this tes
Announcements March 5 Tues (14th)
Ive put on a few additional tests and a tentative formula sheet on Moodle
TEST # 2 6 days from now
- It will cover Chapt. 4 Chapt. 6.2
- Similar to last test - ~ 17 multiple choice. Many are fro
2.4 Kinematics for Constant Acceleration Now we can apply the concepts of displacement, velocity, and acceleration to pp describe the motion of objects. Before we begin, lets make one more simplifying condition We will only deal with objects that undergo
1.8 The Component Method of Vector Addition Many times, using Law of Sines or Law of Cosines will work when doing times using Law of Sines or Law of Cosines will work when doing vector addition. However, there are times when the geometry can get complicat
PHYS2001 Physics 1
1.1 The Nature of Physics From the very big to the very small, Physics covers it all! This semester we will focus on Classical Mechanics big things moving slowly (wrt the speed of light). Next semester you will study Electricity and
PracticeProblems
1) Ifabindingpriceceilingisinplaceandifthedemandfortheproductshiftsoutward,one consequencewouldbe A) thequantityexchangedwouldincrease. B) anincreaseintheamountofexcesssupply. C) thequantityexchangedwouldremainconstant. D) thequantityexch
PHYS2001 Practice Final Exam C
Name:_
1. Bubble in your version of the exam. You have Version A.
A) A
B) B
C) C
D) D
2. Which of the following are correct units for angular momentum?
A) kgm/s
B) kgm2/s2
C) kgm2/s
D) kgrad/s
E) kgrad/s2
3. The first drawin