Dr. Robert Brown rgb@phy.duke.edu 919-280-8443 cell 20% homework 20% quiz 10% lab 50% exams policy... <50 F <60 D <80 C <90 B >90 A method of three passes (+) treasure chest: sunglasses - candy [dark chocolate] math help in recitation -- eval/diagnostic test? SI units - m, kg, s [all we need for now] kinematics - math with units dynamics --> dynamic principle aristole -- flawed (non-experimental) physics - copernicus -- tycho brahe -(parallax -- planets) -- kepler (planets moving without! slowing down) newton -- steps into this puzzle --> postulates principles - experimentally verifiable Newton's Laws 1. directly contradicts aristole => 2. F = ma = dp/dt p = mv 3. F_ij = -F_ji coordinate descrip -- x(t) trajectory; v(t) = ; a(t) = [class @ 1pm !!]