Friday, October 7, 2016
Thursday, October 6, 2016
Wednesday, October 5, 2016
Tuesday, October 4, 2016
Section 4B introduces us to Kinematics or the description of how things move by measuring positions, speed or velocity, and acceleration of the objects being observed. Let's deal with the objects position to start with. This leads us to the difference between distance and displacement. Distance is a scalar quantity where you take the individual lengths in your trip and add them up to get a total. On the other hand, displacement is a vector quantity is measured as the shortest distance between where you started from to where you ended at. Looking at this mathematically, distance uses addition of the total lengths involved in the motion while displacement deals with the difference from the start to the finish. Calculating these two is described in the video below.
Monday, October 3, 2016
Motion occurs over a period of time measured in seconds (s) and the length of that time span is known as an interval (represented by delta [triangle] t). We must correctly identify the time interval as an important part in understanding how things move.
In a system a scalar or a vector are used to describe the motion of an object. The above video by Mr. Anderson at Bozeman science will give you a good understanding of the difference between these two and how they relate to motion.