Cuesta College, San Luis Obispo, CA
Students have a weekly online reading assignment (hosted by SurveyMonkey.com), where they answer questions based on reading their textbook, material covered in previous lectures, opinion questions, and/or asking (anonymous) questions or making (anonymous) comments. Full credit is given for completing the online reading assignment before next week's lecture, regardless if whether their answers are correct/incorrect. Selected results/questions/comments are addressed by the instructor at the start of the following lecture.
The following questions were asked on reading textbook chapters and previewing a presentation on vector components and projectile motion.
Selected/edited responses are given below.
Describe something you found interesting from the assigned textbook reading or presentation preview, and explain why this was personally interesting for you.
"That different horizontal motion does not affect vertical motion because I would've expected it to take longer to fall if it was moving faster horizontally."
"A projectile trajectory is essentially vertical free fall with a horizontal velocity component."
"The case of the two billiard balls, one dropped from rest and other with horizontal velocity will have the same vertical motion and will hit the floor at the same time. Don't know that, but now I do!"
"Given magnitude and direction of a vector you can use cosine and sine to solve for the vector's horizontal and vertical components!"
"I did not find anything interesting."
Describe something you found confusing from the assigned textbook reading or presentation preview, and explain why this was personally confusing for you.
"Reading about and looking at the equations in the book got confusing for me but after I read your blog it made a lot more sense."
"Projectile motion confuses me because I don't yet fully understand how gravity affects trajectory."
"Why horizontal velocity never changes for projectile motion."
"Finding it hard to remember some concepts in trigonometry."
Mark the level of your exposure to trigonometry (triangles, unit circles, inverse functions, Pythagorean theorem).
None at all. [0] Slight. ********* [9] Some. ******** [8] A fair amount. ***************************** [29] A lot. ****************** [18]
For all possible cases of an object during ideal projectile motion, the horizontal acceleration component ax must be:
a positive value. ****************** [18] zero. ********************************* [33] a negative value. *** [3] (More than one of the above choices.) ****** [6] (Unsure/guessing/lost/help!) **** [4]
For all possible cases of an object during ideal projectile motion, the distance traveled will be __________ to the magnitude of the displacement.
less than. **** [4] equal to. *********** [11] greater than. *************************** [27] (More than one of the above choices.) ******************** [19] (Unsure/guessing/lost/help!) *** [3]
Ask the instructor an anonymous question, or make a comment. Selected questions/comments may be discussed in class.
"I really like how the quiz was set up. And I am extremely happy that we have access to our grades so quickly. Thanks for making that so readily available to us."
"My man P-dog, got's a dope blog. Its simple to log...on and clears up the fog for when I can't jog...my memory--ha ha--I like the blog--great visuals."
"Slowly, but surely, I'm beginning to understand the concepts presented in the book. But in-class problem solving is a big help for me personally."
"Reading the sections first and then reading your blog and then going back and reading the sections again helps me to understand the material really well."
"All these equations and formulas are stacking up. Will all equations be provided on tests and quizzes?" (Yes--those that are listed at the end of every flashcard question packet.)
"How familiar do I have to be with trigonometry for the remainder of the class? I know we need to know soh-cah-toa and the unit circle, but what about some of those others like the half-angle formula? Any helpful resources for people who need to be refreshed on their trigonometry?" (You should be readily able to convert the horizontal and vertical components of a vector to/from its magnitude (hypotenuse) and direction. You don't really need to know any more trigonometry than that. Be sure to ask for help if you need it during the in-class problem solving session.)
"Which cat is your favorite of the two you post on Instagram?" (Pocahontas.)
"What are the things that hang down from the desks in class?" (They're called modesty panels.)
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