Reading due Wednesday, November 5, 2008 at 8:30 a.m
Read Reese Chapter 9.3, 9.9 - 9.13 and answer Reading Questions 9 on the Web.
Homework due Thursday, November 13, 2008 at 8:00 a.m. Homework should be placed in the box outside of the professor's office (Nielsen 343) by 8:00 a.m.
Problems A and B: These problems must be solved using the Context-Rich Problem Solutions Outline. Please print copies of the worksheet from the web and use them to solve these problem.
Problem A: Because of your physics background, and awesome good looks,
you have been hired as a technical advisor for a new James Bond movie.
In the script, Bond and his latest love interest, Gigi Gotitall, who is 2/3
his weight, (including skis, boots, clothes, and various hidden weapons),
are skiing in the Swiss Alps. Gigi skis down a slope while Bond stays at
the top to adjust the tension on his boot. When she has skied down a
vertical distance of 100 ft, she stops to wait for him and is captured
by the villians working for the evil Dr. Goldennose. Bond looks up and
sees what is happening. He notices that Gigi is standing with her skis
pointed downhill while she rests on her poles. To make as little noise
as possible, Bond starts from rest and glides down the slope heading
right at her. Just before they collide, she sees him coming, pushes
the bad guys away and lets go of her poles. He grabs her and they both
continue downhill together. At the bottom of the hill, another slope
goes uphill and they continue to glide up that slope until they reach
the top of the hill and are safe. The writers want you to calculate
the maximum possible height of the second hill relative to
the position where the collision took place. Both Bond and Gigi are
using new, top-secret frictionless skis developed by "Q" exclusively
for the British Secret Service.
Problem B: Your friend's little brother, who is in Junior High, got
into trouble for shooting a spitball in class. The kid wants to
know if the teacher actually saw him shoot it or if someone else
informed the teacher of his misdeed. He says that he shot a small
spitball, estimated to have a mass of 10 grams, at a model of the
moon that was hanging from the ceiling by a 1.5 foot string.
Your friend's brother said that the spitball flew in a beautiful
arc covering the 4.0 meter horizontal distance between him and the
model in 0.40 seconds. After it had passed the peak of its arc it
hit the 100 gram model of the moon and stuck to it. You estimate that
the teacher would have noticed any vertical displacement of the
model of more than 2.0 centimeters. Did the teacher notice the
model move, or did someone else inform the teacher of the spitball incident?
Exam 3 will be held in class on Friday, November 14, 2008. It will primarily cover material from Chapters 8 and 9, but may also include related material from all previous chapters. I will try to let you start five minutes early and let you end five minutes late.