## Physics 130 Lecture-related material

Note that all PDF files are password protected - the password will be given in class.
Week 1:
Lecture notes: units, metric system, significant figures, dimensional analysis
New Scientist article about attempts to define the kilogram standard, and here is the result (video): the World's Roundest Object (with a good presentation of the origin of the kilogram mass standard).
Bird poop and miles per gallon - Dimensional analysis and units cancellation humor.
Field Studies of Pedestrian Walking Speed and Start-Up Time - research paper on speeds of elderly pedestrians crossing the street. Note the use of feet per second and meters per second to quantify walking speed.
Week 2:
Lecture notes: vectors.
Week 3:
Lecture notes: representing motion
1-D acceleration curves applet
Modeling the energetics of 100-m running by using speed curves of world champions, by Laurent M. Arsac and Elio Locatelli J Appl Physiol 92:1781-1788, 2002.
Wired Science: Bolt is freakly fast, but nowhere near human limits
Deadly strike mechanism of a mantis shrimp. Also see this TED talk and (So-called) Fastest animals on Earth. In fact they mean "fastest" in terms of acceleration, not speed. Don't make this mistake!
Another quadratic solver/plotter (opens in a new window). Remember that acceleration appears in the quadratic equation of motion as 1/2 a t2.
1-D constant acceleration applet. For this to work, keep initial velocities in the range [-10,+10] m/s and accelerations in the range [-2, +2] m/s2.
Diving into 30cm water from 10 meters - from "Stan Lee's Superhuman" series. Calculate the time of flight and impact speed (neglecting air drag). Then calculate the acceleration (upwards) after he hits the water.
Weeks 4-5:
Lecture notes: More gravity, 2D kinematics introduction.
Week 6:
Lecture Notes: 2-D motion, projectile motion.
UC Berkeley: Trap-jaw ant videos
Projectile Motion applet - good for checking answers
Solving Projectile Motion Problems - from physics247.com homework help site.
Student Misconceptions about Projectile Motion - thesis study of high school physics/math students.
Biomechanical Problem of Shot Putting Finally Solved - MIT Technology Review.
Week 7:
Lecture Notes: Newton's 1st and 2nd laws, forces, air drag.
Galileo's Experiments (Shockwave tutorial from a PBS documentary).
Biomechanics of Athletics at the School of Sport and Education, Brunel University.
Red Bull Stratos project
Week 8:
Lecture Notes: forces, free-body diagrams, tension, normal force, kinetic and static surface friction.
Week 10 (after Spring Break):
Lecture notes: Inclined plane, kinetic friction, uniform circular motion
Steep movie
An analysis of the forces required to drag sheep over various surfaces (Applied Ergonomics v33, p. 523) - winner of a 2003 Ig Nobel Prize.
2010 Ig Nobel Prize for Physics: Preventing winter falls a study showing how wearing socks over shoes increases static friction on snow and ice - from the New Zealand Medical Journal.
Friction coefficient of a banana skin
Weeks 11-12:
Lecture Notes: Buoyancy, Newton's 3rd law
The buoyancy, equilibrium and potential swimming ability of giraffes by computational analysis - - summary of a Journal of Theoretical Biology paper on modeling of a mass distribution to find both the center of mass and buoyant force.
Week 13:
Lecture notes: Newton's 3rd law, impulse, momentum, collisions.
Week 14:
Lecture notes: Center of mass, solid body rotation (torque, moment of inertia) .
Week 15:
Lecture notes: Work. Kinetic, potential, and mechanical energy
Cow airbags, and other external air bag concepts

Physics 130