Review Guide for Exam 1 PHY 101

Topics:

What is a World View?
What is Science?
How can we identify Science?
How does Science fit in the overall World View?
How does Physics fit in the Science World View?
What are the 3 Fundamental Quantities?
Why are they fundamental?
What are the SI (international) units for the 3 quantities?
What is meant by the term displacement?
How is the Average Speed calculated?
How is the Average Speed found from a graph of position versus time?
How does the Average Speed differ from the Instantaneous Speed?
How is the Instantaneous Speed found from a X-t graph?
What is meant by the term Average Acceleration?
How is the Average Acceleration found from a graph?
How is the Average Acceleration calculated?
What is the relationship between an Instantaneous Quantity and a Tangent Line on a graph?
Be able to critically describe Aristotle’s world view.
Why did Aristotle’s world view last so long?
What was Aristotle’s model for how fast an object Falls to earth?
Be able to critically describe Galileo’s world view and how it differs from Aristotle’s.
How did Galileo "slow down" free fall so that he could study it?
What did Galileo use for timing his experiments?
What pattern did Galileo discover in the motion of an object from rest?
When released from a point near the earth’s surface, all objects fall with an acceleration of ______.
What is the equation that describes How FAR an object will fall in a certain time?
What is the equation that describes How FAST an object will travel a certain time after release?
How does one calculate the Average Velocity if you know the initial and final velocity?
What does knowing the Average Velocity tell you about the Instantaneous velocity?
Be able to critically define Newton’s FIRST LAW.
How is inertia related to mass?
How is Newton’s First Law different from the Natural State view of Aristotle?
What is a Vector Quantity?
What are the 4 vector quantities that we have studied?
What must be present if an object’s velocity changes?
What information MUST be provided to specify a Vector?
How does one Add Vectors?
What does one obtain when adding together all of the force vectors acting on a given object?
Be able to State Newton’s Second Law and to critically apply it.
What are the Units of Force?
How is the weight of an object defined?
What is the difference between the mass of an object and its weight?
Why is 2.2 pounds NOT EQUAL to 1 kg?
How does Air Resistance depend on the size and speed of an object?
What is meant by Terminal Velocity -- is it how fast you can type?
Be able to describe the motion of an object falling from a great height using the world views of Aristotle, Galileo and Newton.
What is the nature of the force of friction (or air resistance)?
Be able to State and Critically Apply Newton’s Third Law.
In a tug of war does the winner "pull harder" on the rope than the loser? Explain.
When an object moves in a circle of constant radius with a constant speed, does it have an Acceleration?
If a yo-yo is swung in a circle about your head, is the force on the yo-yo in or out?
What is the Centripetal Force?
Why is the Centrifugal force called a "Fictitious Force"?
Is F = m *v *v / r ever the Cause of Motion?
What keeps an object from falling through the floor of a building?
What is a "Frame of Reference"?
What is an Inertial Frame of Reference?
Why are Inertial Reference Frames important?
Will two observers in inertial reference frames always agree on the motion of an object?
In the demonstration of the two balls, why did they hit the floor at the same time?
What is meant by Projectile Motion?
How are the vertical and horizontal parts of projectile motion related?
Be able to State Newton’s Law of Universal Gravitation in words and as an equation.
Why is the word Universal so important in the Law of Gravitation?
If the separation between two objects is doubled (or halved or ...) how does that effect the gravitational force between the objects?
Why are the astronauts in the Shuttle said to be weightless? How can this occur?
There will be Questions about the demonstrations, and questions about the concepts that you studied in the computer exercise!

Barney Taylor Physics Dept. Miami University - Hamilton 1601 Peck Blvd. Hamilton, OH 45011 (513) 785-3040 taylorbe@miamioh.edu