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.
Kinematics is the study of HOW objects move. Acceleration is defined as the rate of change in velocity. Velocity-Time graphs and Position-Time graphs are used to develop motion equations and an understanding of the concept of motion with constant acceleration. You will develop descriptions of accelerated motion and you will use graphs and equations to solve problems involving moving objects. You will also describe the motion of objects in free fall.
THIS WEEK (9/26 - 9/30):
This week we will begin our focus on defining acceleration. We will take the definition of acceleration and use the equation for average acceleration in order to solve problems. We will then take a look of how the kinematic equations are derived and use them to solve constant acceleration problems. We will then take a graphical look at the motion of an object in order to better understand motion.
NEXT WEEK (10/3 - 10/7):
We will continue to look at motion with constant acceleration. After beginning to use the kinematic equations of motion last week in order to solve problems, we will continue to use them in order to solve certain unknowns. We know that objects accelerate down to Earth at a constant rate of -9.8m/s2 by the force we call gravity. We will use the gravitational constant in order to study free fall motion and solve problems involving objects that are in free fall.
☻LAB: Uniform Motion: - Due the week of 9/26 on your lab day!
☻QUIZ: Friday 9/30 - Acceleration
☻TEST: Monday 9/26 - Velocity
☻LAB: Graphing Practice - Due the week of 10/3 on your lab day!