Solution for Long-answer Homework 5 Accelerated motion
Solution to Long-answer Homework Problem 5.1(Boats)
Problem: Two boats are headed across a calm bay in the same direction, West. One is a sailboat, and a
sudden change in the wind causes it to experie
Solution for Practice Test 7 for Test 4
Solution to Practice Test Problem 7.1(Hospital ladder)
In the intensive care unit at Arlington Memorial Hospital, the
television sets are set in recessed areas high up the wall. Periodically, the 60 kg
Study Guide for Velocity
From reality to model
Skill 3.1 Understand conceptually how real systems are modelled using tables, graphs
Kinematics is the quantitative study of motion. In order to study the motion of an object at th
Solution for Long-answer Homework 10 Reference Frames problems
Solution to Long-answer Homework Problem 10.1(Explosive ice skaters)
Problem: A 65kg ice skater is gliding with his 50kg partner at a velocity of +3 m/s. He then pushes her away
from him such
Solution for Long-answer Homework 3 Motion problems
Solution to Long-answer Homework Problem 3.1(Motion diagrams)
Problem: Lets think back to some of the data analysis we have done in lab.
(a)Given the theoretical line below, sketch in how you would expec
Solution for Practice Test 3 for Test 2
Solution to Practice Test Problem 3.1(Kart race, inelastic collision, energy)
Problem: In a Mario Kart race, Bowser is upset about you hitting him with a turtle shell and decides to get even.
Bowser, traveling with
Solution for Long-answer Homework 12 Interactions problems
Solution to Long-answer Homework Problem 12.1(Two Bricks Collide and Stick Together)
Problem: A 2kg block is sliding across a frictionless surface at 20m/s. The block collides with another block
Solution for Long-answer Homework 8 Energy problems
Solution to Long-answer Homework Problem 8.1(Practice test for homework)
Problem: Please make sure you got all of the questions right on the practice test. It was the best way to prepare
for the exam, so
Solution for Long-answer Homework 6 Inertia and Momentum problems
Solution to Long-answer Homework Problem 6.1(Two Ships in an Ocean)
Problem: Two ships are oating at rest in the ocean somewhere. Ship A (1100kg with an escape pod onboard)
res a escape pod
10.9 Work Done on a Many-Particle System
The change in a systems translational kinetic
is found from the vector sum of all external forces and
the distance the center of mass is displaced in the
direction of that vector sum
It is NOT the same as th
8.4 Sources of Energy
With regards to energy, there are two types of
interactions: conservative and
nonconservative interactions. You should be
able to distinguish between them.
Interactions that convert one form of mechanical
energy into another CAN be c
8.1 The Effects of Interactions
In order to have an interaction, at least two
objects are needed.
In a repulsive interaction, bodies accelerate
away from each other. In an attractive
interaction, bodies accelerate toward each
Momentum is still co
For next time
I am going to reference equations from the
textbook, sections 7.9 and 7.10, even
though you are not responsible for reading
the text. You are responsible for reading
the notes (study guide from the web) for
those sections, and looking at th
Please place Practice test 1 in your
Counts as lecture quiz 8.
Total of 5 points possible.
One point is subtracted for each of the 5
problems not tried, perfection not
We will go over it some in lecture and the
rest in lab. In lab, y
6.1 Isolated Systems
In order to analyze any given physical
situation you must identify the:
Any well-defined particle, object, or group
of objects that we can separate, in our
minds, from its environment.
6.1 Isolated Systems
4.1 Changes in Velocity
Remember an x-t graph
at constant velocity is
a straight line.
If the displacement x
at time t is above the
tangent, the objects
velocity is increasing
(or, as shown in the picture,
we could look at size of the
Extra Credit Assignment
Go to the UPI web page where there is a link
Do the Attitudes and Beliefs Survey.
Make sure you do the survey by the end of
Worth 5 Extra Credit points!
3.1 From reality to model
Study Guide for Work
Skill 10.1 Understand what conditions must hold if a force does work on a system.
Denition of Work: Work is the change in total energy of a system due to external
To do work, the point of ap
Study Guide for Waves in one Dimension
Representation of waves
Skill 17.1 Understand the dierence between transverse and longitudinal waves.
Mechanical waves can be classied into two types: transverse and longitudinal.
Transverse waves cau
Study Guide for Torque
Skill 13.1 Understand what torque is and what quantities go in to determining it
Denition of Torque: Torque is the ability of a force to rotate an object.
Whereas the application of a force causes a change in
Study Guide for Thermodynamics
Thermodynamics Notes (on website under Additional Info)
Skill 18.1 Thermodynamics
The thermodynamics reading is accessible through the main course website. See the button marked Thermo
Study Guide for Moving Reference
Uniformly moving reference frames
Skill 7.1 Understand how measurements of position and velocity can dier depending
on the reference frame in which they are taken.
A reference frame is dened by a refer
Study Guide for Periodic Motion
Periodic motion and energy
Skill 16.1 Understand the fundamentals of periodic motion.
Periodic motion is any motion that repeats itself. It is due to a continuous back and forth conversion between
Study Guide for Motion in a Plane
Straight is a relative term
Skill 11.1 Understand the theory behind decomposition of motion
As we saw in Chapter 7, our choice of reference frame aects measurements of quantities such as position and
Study Guide for Interactions
The eects of interactions
Skill 8.1 Understand the characteristics of an interaction.
Previously, we talked about collisions before and after two objects interact (before and after the collision). Now,
we will co
Study Guide for Inertia
Rest and motion
Skill 5.1 Understand how friction aects velocity
Friction occurs when two surfaces are in contact with each other, and its eect is to bring the objects to rest with
respect to one another. So friction
Study Guide for Gravitation
Skill 14.1 Understand the role of the gravitational force in maintaining the orbital
motion of the planets.
Dont get rotational velocity and orbital velocity confused. Rotational velocity i
Study Guide for Force
Skill 9.1 Understand how the force exerted on an object is related to the objects
Linear momentum is conserved for an isolated system, but it is not necessarily conserved for a system interacting
Study Guide for Energy
Skill 6.1 Understand qualitatively how an interaction between objects aects the interacting objects
In beginning a problem, rst dene your system. Our choice of how to dene the system is completely arbi
Study Guide for Motion in a Circle
Uniform circular motion
Skill 12.1 Understand how rotational position and velocity dier from linear position
So far, the only type of motion we have been dealing with is translation motion,