Thursday, November 30, 2017
1:00 - 2:30; 90 min. -
Physical Science:
Speed and Direction-
Will and I reviewed the definitions of distance, speed, and velocity. He also had some idea about friction to share with me; rolling requires more friction than sliding. We discussed the differences between substrates that contribute friction to an object moving. We then reviewed the equations for determining speed, from time and distance. Will worked some problems to use this skill, and we slowly incorporated the vocabulary associated with velocity, which requires direction along with speed. We worked on a problem where an airplane travels at 35 degrees for a given distance and time. I showed Will the two ways to use degrees as a manner of direction (and not temperature). We drew a map compass rose, and examined some maps to see them in situ. I showed him that north can be 0 degrees or 360 degrees, and we discussed how someone can turn 360 degrees. We then noticed that south is 180 degrees, west is 270 degrees and east is 90 degrees. Using the compass rose, and his iPhone compass, Will determined that 35 degrees was northeast. We worked a few problems, in which he was challenged to find the speed and velocity (including direction) from time and distance sentences. Homework: complete the word problems on velocity.