Friday, September 25, 2009
Friday, September 25, 2009
Projectile Motion
Day 1 (Mon Sept 28):
-Went over HW from Friday: PSE pg. 7 #7-8, pg. 12 A-6, A-7, A-12.
-Teacher explained ball-launcher demo & asked for predictions—would the balls land simultaneously, or would one of them land earlier?
-After demo, discuss separateness of vertical acceleration from horizontal motion.
-Students read the introduction to Projectile Motion: PSE pages 21-22.
-T worked Freefall in 2-d example problems, PSE pg 22-23, using Step 1, Step 2 process.
-HW: PSE pg 24-26 #10-16.
Day 2 (Tues Sept 29):
-Warm-up: a couple of 2-D projectile motion problems
-Went over HW
-Did Reaction Time Lab
-HW: PSE pg 28 #A-10, 11
Day 3 (Weds Sept 30):
-Warm-up: a couple of 2-D projectile motion problems
-Went over HW
-Completed Reaction Time Lab
Day 4 (Thurs Oct 1):
-Showed how to draw velocity vectors on projectiles.
-Showed how to calculate their true velocity and direction (by adding vectors).
-Handed out a set of motion practice problems. Did three as warm-up.
-HW: Problem set do at least three in the first section (probs #1-7) and five from the second section (#9-24) as preparation for FRIDAY TEST on Freefall & Projectile Motion.
Day 5 (Fri Oct 2)
-1-D and 2-D Motion Quiz
Day 6 (Mon Oct 5)
- Projectile Motion Lab: Land a marble in a cup, after finding it’s Vx
Day 7 (Tues Oct 6)
-Warm-up: Determine the (horizontal) launch velocity of a ball bearing.
-Pairs questions: (Ch. 3, Projectile Motion), then discuss answers.
-Hand back Motion quizzes from Friday.
-(If time allows): watch 15-min video: Big Air rules.
-HW: Text Ch.3 end (p.41), Qs 29-38.
Day 8 (Weds Oct 7)
-Discussed HW
-Handed back & discussed last Friday’s quiz.
-HW: Had students take home conceptual questions, do #17-33.
Day 9 (Thurs Oct 8)
-Discuss the homework.
-Take Concept Quiz.
-Handed back Projectile Motion Lab.
-Introduced Wondering Physics Presentation, and began scheduling it.
-Reviewed use of motion & acceleration formulas.
-Handed out a problem set (prep for a second quiz next Tuesday).
-**** We can replace an earlier quiz score, if you do better, not hurt earlier score if you don’t do as well.
-Did “Shoot the Monkey” (a projectile motion lab experience).
Day 10 (Mon Oct 12) (Mr Frankel out sick.)
-Handed back, went over Conceptual Quiz
-Review day
Day 11 (Tues Oct 13)
-Practiced for Quiz retake
-Discussed Wondering Physics again
Day 12 (Weds Oct 14) (Early release day)
-Wondering Physics planning time
Day 13 (Thurs Oct 15)
-Linear Motion & Freefall Quiz retake
-HW: read Ch 4, sections 4.1-4.4, do problems p. 57 #26-31.