Walking the graphs

Position-Time graphs

9-12-07

Determine the motion that occurs in each section:1)Direction of motion (+, -, zero)2)Velocity (constant, or not)3) rate or change of motion

Physical Science Students

• Hand in your note-card

• Hand in your 1st homework assignment, if you have not already done so

Computer problems

• william.baker@redclay.k12.de.us

• Send me an email with a description (as specific as possible) about any problem you have getting on to , or using anything on my website

Honors

• Homework and reading assignment

• Due Friday (9-14-07)

• Read pages 321 and 325 through 330

• Problems in the textbook to solve:– 1, 3, 5 on page 324– 1through 5 on page 328

College Prep (periods 5 and 7)

• Reading and Homework assignment• Due Friday ( 9-14-07)

• Read Pages 321 and 325 through 330

• Do following problems in textbook:– 1 and 3 on page 324– 1, 2, and 3 on page 328

Homework handout #2

• Due Friday (9-14-07)

• Concerned mainly with connecting motion to position-time graphs

• 2 questions on conversions and velocity

Problem #4a on homework

Picture #4b

Creating a graph from written information

• Draw a copy on a piece of paper

In the next graph…

• You will create a graph that represents the following motion

• Section 1- starts at the -2 meter position and moves with slow positive constant velocity

• Section 2- moves with fast negative constant velocity

Information for next graph…

• Section 3- moves with positive non-constant velocity and is getting faster

• Section 4- moves with a constant velocity of zero

• Section 5 – moves with a negative non-constant velocity and is slowing down

• We have talked about how the graphs can show motion

• We have looked at graphs and drawn them

The graphs

• Each student will get a sheet with 3 graphs on it

• Take a minute to write on the graph motion information on each section

• Mark on graph the each section should take about 5 seconds

How to walk a graph

• Students will be assigned to a group

• The group decides the location of the zero position

• Show constant velocity by walking at a constant pace – same size steps

• Show a change in velocity by moving from baby steps to big steps (or the reverse)

Grade

• Ten points to the groups that can successfully demonstrate the motion of two of the graphs

• An extra point if the group does all 3