Physics 50
Uniform Circular Motion Problems
1. An earth satellite moves in a circular orbit of 640 km above earths surface with a period
of 98.0 min.
a) Calculate the speed of the satellite.
b) Calculate acceleration of the satellite.
2. A rotating fan co
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#1) What are the 3 fundamental dimensions in the study of mechanics ?
#2) If two quantities have different units, could they have the same dimensions ?
Give an example to demonstrate your answer.
#3) In a student's class
1) A displacement has a magnitude of 60.0 meters at an angle of 70 degrees below the
+ x axis. What is the vector in unit vector (component ) representation ?
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1) a) Convert the acceleration 72 meters/houriminute South into rnlsls.
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2) Determine if the equation v = (tzasz)2 is dimensionally correct. Here v is velocity, 3 is
a
A coordinate system is such that it has the +x direction going rightward.
A person begins at the coordinate x = -20 meters and walks 25 meters right, and then after that 35
meters left and then after that 40.0 meters right. The entire motion takes 30 seco
PI is .51.
fPLh. tutti[k ittfftmnmtf thitauetif Ferrite-e vet'th Jpeei;
their: elevator goes upward 3t} meters. then '
downward 23 metats and then upward 11 meters.
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1. - consider the motion of an insect moving {-
along the s ELKIE according to the
Why does ice melt ? (outside of fridge)
Why does a solid ball roll down a hill faster than a battery
?
Where does light come from ?
Why does a hot electric stove glow red ?
How does light get from one place to another ?
Why dont atoms collapse ?
Why are s
ntroduction to Physics
Physics is a quantitative science, based on careful measurements
of quantities such as mass, length, and time. In the measurement
shown here, a baby elephant is found to have a mass of approximately
425 kilograms, corresponding to a
HP #10 When we move to chapter 3 it will become important that students know how to draw
lengths and angles accurately (since we will be making diagrams in two dimensions [2D]). So
lets practice those skills.
1) Practice drawing lengths accurately without
HP#2:
1) Find 7 objects in your house and estimate the length of the objects without using
any equipment. Try to use some short objects and some longer ones. Then
measure the lengths of each item and determine how close you came, for each item)
by doing a
HP #13:
Add the following two vectors three different ways and then check to see if the
answers are all close to each other. 1st method is graphic method using accurate
diagram 2nd method is using law of cosines and law of sines.3rd method is using
compon
HP #16:
You need to know that the Ferris wheel is turning clockwise (in same direction as
clock hands) and the speed of each rider is 6.0 m/s.
HP #17:
For part c) : To determine the initial velocity that will make the ball go through the
middle of the hoo
HP #19:
1)Write a 450 word essay ( 3 pages approximately) about Newton's 1st citing several
sources and note how different sources approach the topic. Work should include
some diagrams and examples of either your own making, or from the sources that
you a
9)
h)
2)
For the projectile path shown below with an
initial velocity of 25 mls :
Copy the path C Long & (Jr/545mm)
Draw in velocity and acceleration vectors at the
2 points (AB)
Where in the motion is the velocity parallel to
the acceleration ? (mark
DO NOT TURN THIS PAGE!
Name: _
Physics 50
Winter 2011
Exam 1
MAKE SURE TO SHOW ALL WORK IN COMPLETE DETAIL. NO CREDIT WILL
BE GIVEN IF NO WORK IS SHOWN. EXPRESS ALL ANSWERS IN SI UNITS.
0
1. An unmarked police car traveling at a constant speed of 95 km/h
DO NOT TURN THIS PAGE!
Name: _
Physics 50
Winter 2011
Exam 2
MAKE SURE TO SHOW ALL WORK IN COMPLETE DETAIL. NO CREDIT WILL
BE GIVEN IF NO WORK IS SHOWN. EXPRESS ALL ANSWERS IN SI UNITS.
0
1. A jet is flying at 600 mi/h in a direction of 450 North of West.
DO NOT TURN THIS PAGE!
NAME: _
PHYSICS 50
WINTER 2011
EXAM 3
MAKE SURE TO SHOW ALL WORK IN COMPLETE DETAIL. NO CREDIT WILL BE GIVEN
IF NO WORK IS SHOWN!
1. For the system shown below assume a massless, frictionless pulley. Take the coefficient
of kinetic
Physics 50 Lecture Final Review
1. MOTION IN 1-D
a) Understand the terms and concepts required to describe the motion of a particle
moving in one dimension.
b) Know how to use the kinematic equations to describe the motion of an object moving
with constan
Picture the Problem: The force vectors acting on blocks A and B as
well as the rope knot are shown in the diagram at right.
Strategy: Write Newtons Second Law for blocks A and B._ as well as
Newtons Second Law for the rope knot. In all cases the accelera