PHYS 2101 Lecture : Lecture6 2110
Document Summary
Announcements sep 8, 2014 monday: written homework #2 posted, due on friday, wileyplus #2 due wednesday night, will cover cross products (on homework for next week) Today vector multiplication, some problems from ch 2. Example: staggering out of fred"s at 2 am on a friday night, you can"t remember where you parked your car. From the bar door you walk 30 m due north, stop, and walk 10 m due east. Here you stop again and then walk 15 m at 30o south of east. Give the direction relative to east. y, north. Notice that the following vector equation would be correct: We can use the component method of vector addition!! y, north. Let"s begin by breaking down the vectors a, b, and c into their x- and y-components. A and b are very easy, since they already line up along one of our axes directions. A is along the y-direction, so it has no x-component, and ay = a.
