Section 3.1: Displacement, velocity, and acceleration in two dimensions. Projectiles. The independence of horizontal and vertical components of the motion of objects moving in a gravitational field. The range equation. Distinction between speed and velocity.
Section 2.1: Motion in one dimension. Displacement, average velocity, instantaneous velocity, average acceleration, and instantaneous acceleration. Graphical representation of displacement, velocity, and acceleration. Sample problems -
The plan was to continue working with Matthew on calculating the length and position of a resultant vector after resolving the contributing vectors into their parts. After finishing that problem, I would work with him to use dimensional analysis to estimate values in problems. Unfortunately, Matthew was not available for virtual or in-person instruction. There was no assignment.
Assignment
See Lesson Outline.
Session Minutes
45
Minutes Student Attended
0
Lesson Comments
Since Matthew will be working with an in-person teacher in both algebra 2 honors and AP Phyics, I will no longer be teaching him. I don't have any other classes scheduled with Matthew or any other students at this time.
Calculating a resultant vector based on addition of three other vectors
Lesson Outline
Matthew and I finished the problem we started yesterday to determine the distance and direction of a hurricane based on its movement over a period of time. We then started a problem to find the resultant based on three other vectors. We only were able to analyze the first vector before we ran out of time. There was no assignment.
Assignment
See Lesson Outline.
Session Minutes
45
Minutes Student Attended
45
Lesson Comments
Matthew is slowly gaining mastery of vector addition which is extremely important in his ability to do almost every other part of the course.
Calculating a position vector from adding two velocity vectors
Lesson Outline
Matthew and I finished the problem from yesterday by calculating the length and direction of a vector from Dallas to Chicago. I then started to show him a problem of locating the position of a hurricane, which follows a certain course for a given time and then changes direction for a different amount of time. I utilized the problem to demonstrate how to draw a sketch of the problem and label it. There was no assignment.
Assignment
See lesson outline.
Session Minutes
45
Minutes Student Attended
45
Lesson Comments
Matthew is slowly gaining the ability to calculate the components of various vectors. This is an extremely important skill in physics.
Matthew and I worked together to find the resultant vector given two oblique vectors. I showed him how to resolve each of two vectors into their component north and east vectors. I then showed him how to combine the components in order to come up with the total north and the total east components. We will finish the problem tomorrow. There was no assignment.
Assignment
See Lesson Outline.
Session Minutes
45
Minutes Student Attended
45
Lesson Comments
Matthew is still struggling with the idea of component vectors. I am also finding a constant need to remind him of what we have been over in the recent past.
The plan was to finish a problem about converting a vector in polar coordinates to rectangular components. That was to be followed by problems converting rectangular coordinates to polar coordinates and some problems about adding vectors to find their resultants. Unfortunately, Matthew was not able to attend class either physically or virtually. There was no assignment.
Assignment
See lesson outline.
Session Minutes
45
Minutes Student Attended
0
Lesson Comments
For an AP Physics student, Matthew has already missed a large number of classes based on golf trips and other personal absences. With an already weak algebra background, in addition to the fact that he conducts sessions off-camera, his ability to pass, much less, do well in this class is questionable. He might, at this time want to switch to a course where he is not likely to fail.
Using trigonometry and vectors to solve displacement and position problems
Lesson Outline
I guided Matthew through some textbook problems about using trigonometry and vectors to calculate displacement and position. We reviewed some of the trigonometry formulas he learned last year in geometry. There was no assignment because Matthew was at home but did not have his textbook.
Assignment
See Lesson Outline.
Session Minutes
45
Minutes Student Attended
45
Lesson Comments
Matthew was alert in class and answered some questions correctly, but
is not yet able to convert word problems into sketches and formulas in order to actually solve them.