If for any reason you will be absent from class and know in advance, please notify me by email so that I can ensure you receive the work that you need in order to stay with the class.
TOP 5 FACTS:
PHYSICS OF TIME
First in time
The Egyptians were the first culture to become interested in timekeeping, building giant obelisks in 3500BC to act as giant sundials.
In 8BC the Roman senate gave ruling emperor August Caesar his own month (August, if that wasn’t obvious…) and added an extra day to match his great uncle Julius Caesar’s month (yep, July!) on 31 days.
Throughout World War II citizens in the United States kept their clocks one hour ahead of standard time to allow for longer working hours during daylight.
The world’s smallest atomic clock, built by the National Institute for Standards and Technology, is the size of a grain of rice and accurate to one second in 3,000 years.
In May 2011 Samoa decided to move its clocks forward by one day to allow easier trade with Australia and New Zealand, after spending 119 years almost a day behind.
Without ways to describe and analyze motion, travel would be chaotic at best. This chapter introduces you to the idea of formally describing and analyzing motion. We will analyze motion using sketches, diagrams, graphs, and equations - which will help us to determine how fast and how far an object will move, whether it is speeding up or slowing down, or whether it is standing still or moving at a constant speed.
THIS WEEK (9/22 - 9/24):
This week we will begin our focus on defining a coordinate system to solve and analyze motion problems. We will differentiate between distance and displacement, discuss the importance of a reference point, and define position. We will begin to solve velocity problems, and recognize the relationship between motion graphs. We will also differentiate between average speed and instantaneous speed by analyzing motion graphs.
NEXT WEEK (9/29 - 10/3):
This week we will continue to analyze motion by using equations as well as using the graphical methods learned last week. We will also take a closer look at the slope of a line and what information it gives us as well as how the slope of a line tangent to a curve yields the instantaneous velocity for that moment. We will end our analysis of graphical motion by determining the total displacement an object travels using a velocity-time graph.
☻LAB: MEASURING HEIGHT INDIRECTLY: DUE WEEK OF 9/22 ON YOUR LAB DAY!
☻LAB: GATHERING AND ANALYZING DATA: DUE WEEK OF 9/29 ON YOUR LAB DAY!
☻QUIZ: TUES 9/23 - Distance, Displacement, and Velocity
☻TEST: WED 10/1 - Velocity