Search Results Archives: September 2010
Free Fall: How Fast?
1. Lecture and demonstration
2. Graph the data in table 2.2 on page 17 for the time interval from zero to ten seconds. Find the slope of the graph and estimate the velocity of the falling object at 2.5 seconds, 5.3 seconds, and 100 seconds.
3. Equation for free fall
4. Do questions 15-18 on page 25-26, 47 and 48a on page 27, and 10,11,12 on page 661. Be prepared to explain your answer if your name is called.
1. Speed and Acceleration video
2. Acceleration
3. Do questions 9-14 0n page 25 and 28-30 on page 26. Finish as homework if you don’t finish in class. Write the questions and the answers, include the question in the answer, or summarize the question so it will help you on the quiz (tomorrow!)
Linear Motion
1. Speed is always relative
2. Speed: Average and Instantaneous.
Example: If I take a trip in my car, and I drive 100 km for 2 hours, pull over and eat lunch for an hour and then drive another 200 km in 2 hours. What was my speed during the first part of the trip? What was my speed during lunch? What was my speed during the last part of the trip? And what is my average speed for the whole trip?
Do the Questions on page 13 in your notes.
3. Speed vs. Velocity Speed is the rate at which something moves; velocity is speed in a given direction. Answer the question on page 14 in your notes.
4. Problems (do for homework if we don’t have time) Answer problems26 and 27 on page 26 and 1-8 on page 25. Try your best on all these questions and I will tell you the answers either at the end of class or tomorrow.