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Make sure you check the calendar and day page after every class in case there are changes Books in Bookstore? - PowerPoint PPT Presentation
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© 2010 Pearson Education, Inc.
Week 1 Day 2 Announcements Make sure you check the calendar and day page after every
class in case there are changes
* Books in Bookstore?
* While participating in the problem solving session is important, you need to be in the one associated with this class => Phyc 157 – 001 or other sessions designated by Dr. Saul
Taking the Phyc 157 from the other P151 class will not be that useful
* Remember to take the Supplemental Help Time Survey by midnight tonight.
* Problem Solving Sessions will meet today at 11 and at noonand Thursday at 11 AM
© 2010 Pearson Education, Inc.
Questions about the class1. How percentage of class points do you need to get a B?
A. 70
B. 75
C. 80
D. 85
E. 90
Slide 1-1
© 2010 Pearson Education, Inc.
Answer1. How percentage of class points do you need to get a B?
A. 70
B. 75
C. 80
D. 85
E. 90
Slide 1-2
© 2010 Pearson Education, Inc.
Questions about the class2. If you have missed more than one day of class due to illness,
where can you go to get an excused absence?
A. Instructor
B. Physics Department Chair
C. Dean of Student Services
D. Your Academic Advisor
E. Your major department chair
Slide 1-1
© 2010 Pearson Education, Inc.
Questions about the class2. If you have missed more than one day of class due to illness,
where can you go to get an excused absence?
A. Instructor
B. Physics Department Chair
C. Dean of Student Services
D. Your Academic Advisor
E. Your major department chair
Slide 1-1
© 2010 Pearson Education, Inc.
Times for Problem Solving (Discussion) Sessions
A. I can attend one of the specified Problem Solving Sessions
B. I could but probably will not attend one of the specified problem solving sessions
C. I cannot attend any of the specified problem Solving Sessions due to other time commitments
Case 1
Wed. @ 11 AM, Wed. @ noon, and Thurs. @ 11 AM
Case 2
Wed. @ 11 AM, Wed. @ noon, and Wed. @ 5 PM
Case 3
Wed. @ 10 AM, Wed. @ 11 AM, and Thurs. @ 11 AM
Slide 1-2
© 2010 Pearson Education, Inc.
Course Format - Like class on Shakespeare
* Before class, learn material from reading - focus on key ideas, express them in your own words
* In class, build understanding of readings through activities and learn to apply ideas
* Homework, practice what you learn and deepen understanding
© 2010 Pearson Education, Inc.
Semester ThemeLearning to understand and how to analyze motion
Describing Motion
Forces
Momentum
Energy
Circular Motion
Rotational Motion
Oscillations and Waves
Thermodynamics
Fluids
Slide 1-7
© 2010 Pearson Education, Inc.
UnitsIs a penny equal to a dollar?
Start with $ 0.10 = 10 cents
Square both sides
$ .001 = 100 cents
Does a penny (100 cents) = dollar? (why not?)
Slide 1-7
© 2010 Pearson Education, Inc.
UnitsHow fast is 50 m/s in miles per hour?
Being able to convert between English units and Metric units is considered by the University to be a major course goal
Slide 1-7
© 2010 Pearson Education, Inc.
UnitsIs pi x 107 a good representation of the number of seconds in a year?
Slide 1-7
© 2010 Pearson Education, Inc.
Good Conversions to Know (or have handy)Rule of Thumb - Approximations
* 1 m/s ~ 2 mph
* 2 lbs ~ 1 kg
* 1.6 km = 1 mi < = > 1 km = 0.6 km
* 1 liter ~ 1 quart
More exact conversions
* 2.54 cm = 1 inch
* 1.609 km = 1 mi < = > 1 km = 0.621 mi
* 2.2 lbs = 1 kg
© 2010 Pearson Education, Inc. Slide 1-31
© 2010 Pearson Education, Inc. Slide 1-28
© 2010 Pearson Education, Inc. Slide 1-29
© 2010 Pearson Education, Inc. Slide 1-30
© 2010 Pearson Education, Inc.
1. What is the difference between speed and velocity?
A. Speed is an average quantity while velocity is not.
B. Velocity contains information about the direction of motion while speed does not.
C. Speed is measured in mph, while velocity is measured in m/s.
D. The concept of speed applies only to objects that are neither speeding up nor slowing down, while velocity applies to every kind of motion.
E. Speed is used to measure how fast an object is moving in a straight line, while velocity is used for objects moving along curved paths.
Reading Quiz
Slide 1-5
© 2010 Pearson Education, Inc.
1. What is the difference between speed and velocity?
A. Speed is an average quantity while velocity is not.
B. Velocity contains information about the direction of motion while speed does not.
C. Speed is measured in mph, while velocity is measured in m/s.
D. The concept of speed applies only to objects that are neither speeding up nor slowing down, while velocity applies to every kind of motion.
E. Speed is used to measure how fast an object is moving in a straight line, while velocity is used for objects moving along curved paths.
Answer
Slide 1-6
© 2010 Pearson Education, Inc.
Reading Quiz2. The quantity 2.67 x 103 m/s has how many significant figures?
A. 1
B. 2
C. 3
D. 4
E. 5
Slide 1-7
© 2010 Pearson Education, Inc.
Answer2. The quantity 2.67 x 103 m/s has how many significant figures?
A. 1
B. 2
C. 3
D. 4
E. 5
Slide 1-8
© 2010 Pearson Education, Inc.
How to describe motion
Slide 1-7
What information do you need to communicate to be able to tell someone how to reproduce a motion?
© 2010 Pearson Education, Inc.
How to describe motion
Slide 1-7
What information do you need to communicate to be able to tell someone how to reproduce a motion?
• Frame of reference or reference frame
• Origin
• Where to start
• What direction to start moving
• What speed to start moving with
• Changes in direction or speed
• Where to stop
• Timing
