## 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.

Physics 130