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 Aristotles world view.
- Why did Aristotles world view last so long?
- What was Aristotles model for how fast an object Falls to earth?
- Be able to critically describe Galileos world view and how it differs from
Aristotles.
- 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 earths 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 Newtons FIRST LAW.
- How is inertia related to mass?
- How is Newtons 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 objects 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 Newtons 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 Newtons 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 Newtons 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