Thursday, September 29, 2016

Activity 10B: Acceleration vs Angle Lab






Design and execute an experiment to determine the relationship between the angle of a ramp and the acceleration a cart has as it goes down the ramp.


Materials

Logger Pro & Motion Detector
Ramp
"Frictionless"  Cart
Connection wires and clamps
Protractor (or cell phone for angle)


You lab report should contain the following sections:


Purpose/Question:
Procedure:
Data: (including appropriate graph(s) )
Analysis:
Conclusion:
Error Analysis:


The lab report should be done google docs and shared with your lab partners and submitted to
the class's google class room Acceleration vs Angle assignment.




Lab report template






Tuesday, September 27, 2016

Activity 10: Introduction to Acceleration



Activity 10.10








Read Section 2.4 in the  OpenStax Textbook. 
After reading this you should know: 
  • The difference between average acceleration and instantaneous acceleration.
  • Average Acceleration = Change in Velocity / Change in Time
  • Change in Velocity = Average Acceleration X Change in Time
  • Do these problems from the textbook, and check your answers here.

Activity 10.15
Answer questions 13,14,16, and 17 below.  
Check your answers here....

Activity 10.18
Answer questions 16 -> 18 on page 82 in the textbook.   When done check your answers here.

Activity 10.19
Complete this East-West Work Sheet  and check your answers here

Friday, September 23, 2016

Activity 9B - Random Velocity Questions



Link to solutions




Two cars start in two cities 400 km apart, and head straight towards one another.    Car one goes 40 km/hr, and car two goes 60 km/hr.  A bee which flies at 150 km/hr constantly travels from one car to another, until the cars meet.   How far does the bee fly in total.


John drives 40 miles at an average speed of  55 mph, and then drives at  65 miles at an average speed of  100 mph.   The average speed of the car for the 120 mile trip is?


On a camping trip, Steve walks 3 miles north in 8 hours, and then 4 miles east in 6 hours.  What is the size of Steve’s average velocity?

John is racing his little brother Billy.  John can run at  30 km/hr, and Billy can run at 12 km/hr. What is the minimum head start Billy needs in order to win a 10K race?




For the velocity vector pictured below the object starts at position 0:

              Estimate  the displacement of this object after 6 seconds

              How far does the object travel.

               When is the object the furthest from the origin 




















Friday, September 16, 2016

Activity 7: Velocity Problem Set



Activity 7.10


Read section 2.2 and 2.3 in the OpenStax Textbook.Remember the definitions of the following terms :

  • Average Velocity   =  Change in Displacement /  Time
  • Average Speed  = Distance Traveled / Time
  • Instantaneous Velocity = the Velocity an object has at an instant in time (.ie what a speedometer says)
  • Instantaneous Speed = The absolute value of Instantaneous Velocity.

Mathematically rearranging the first  equation above gives us the following relationships:
  • Change in Displacement  =  Average Velocity  X Time
  • Time = Change in Displacement  / Average Velocity

With these relationships in mind complete this Speed Problem Set (ask your teacher for a printed copy).
When done compare your answers against this key .  

Activity 6C : Sketching Position vs Time Graphs






Activity 6C.10 - Sketching Position Versus Time Graphs

After completing this exercise you should.

  • Understand the motion depicted in a position-time graph.
  • Understand that the slope of the position time curve defines the objects velocity.
  • Be able to derive a velocity time graph from a position-time graph.
  • Understand what negative position and negative velocity mean.


Please watch this introductory video on Position Versus Time Graphs



Complete the Sketching Position Versus Time Graph exercise on pages 21 - 23 in your lab manual .

When done compare your answers against this answer key.



Wednesday, September 14, 2016

Activity 7: Velocity Problem Set



Activity 7.10


Read section 2.2 and 2.3 in the OpenStax Textbook.Remember the definitions of the following terms :

  • Average Velocity   =  Change in Displacement /  Time
  • Average Speed  = Distance Traveled / Time
  • Instantaneous Velocity = the Velocity an object has at an instant in time (.ie what a speedometer says)
  • Instantaneous Speed = The absolute value of Instantaneous Velocity.

Mathematically rearranging the first  equation above gives us the following relationships:
  • Change in Displacement  =  Average Velocity  X Time
  • Time = Change in Displacement  / Average Velocity

With these relationships in mind complete this Speed Problem Set (ask your teacher for a printed copy).
When done compare your answers against this key .  

Activity 6B - Moving Man Simulation




Open this link and follow the directions....  This lab submission should be in a form of a google doc.  If you need help adding charts, graphs, tables or screen shots into a google doc please let me know.


Tuesday, September 13, 2016

6A: Island Cruising with Trigonometry



Follow these instructions  and determine the displacement from Loca to Brianca (it is the vector sum of the 4 vector legs of the trip).  Remember to calculate the magnitude and the angle of the final vector,

Check you answer here....

Saturday, September 10, 2016

Activity 6 Distance and Displacement

By the end of this activity you should :

  • Understand the difference between distance and displacement.
Activity 6.10  

Read Section 2.1 Displacement  in the Open Stax Textbook.

`Watch these  videos on distance and displacement.
    video 1
    video2








 Answers the following questions in this form and submit.

    1)   John walks 10 km East.
  • What is John's distance traveled?
  • What is John's displacement?

     2) Sally walks 10 km East and then turns around and walks 3 km West
  • What is Sally's distance traveled?
  • What is Sally's displacement?

     3) Puff, the cat, walks 10 km East and then turns around and walks 10 km West.
  • What is Puff's distance traveled?
  • What is Puff's displacement?
      4) Spot, the dog, walks 10 km East and then turns around and walks 15 km West.
  • What is Spot's distance traveled?
  • What is Spot's displacement?





Activity 6.20


2.1 Displacement Questions (taken from Textbook pg 82)


Figure 2.59
1. Find the following for path A in Figure 2.59
(a) The distance traveled.
(b) The magnitude of the displacement from start to finish. 
(c) The displacement from start to finish.


2. Find the following for path B in Figure 2.59:
(a) The distance traveled.
(b) The magnitude of the displacement from start to finish. 
(c) The displacement from start to finish.

3. Find the following for path C in Figure 2.59
(a) The distance traveled.
(b) The magnitude of the displacement from start to finish. 
(c) The displacement from start to finish.

4. Find the following for path D in Figure 2.59
(a) The distance traveled.
(b) The magnitude of the displacement from start to finish. 
(c) The displacement from start to finish.

When you are done check your answers here.


Activity 6.30
Obtain  a protractor & a ruler from your teacher if you do not have one.
Do the Where's Waldo Activity 1 ( Where's Waldo in the picture)  on page 3.  Remember, when you do the exercise you should start in the lower left corner of the picture.   Do not do Activity #2

After completing this exercise check your answer against this solution.

Activity 5B - Vector Addition Review

Activity 4B.10

Watch this video





Activity 4B.20

Add together the following vector pairs using the component method

Pair 1
  • Vector A -  Points 10km @ 30 degrees North of East
  • Vector B - Points 15 km @ 60 degrees North of East

Pair 2
  • Vector D - Points 30 km @ 25 degrees North of West
  • Vector E - Points 15 km @ 70 degrees North of East 

You should get the following answers

A + B = 24.2 km @ 48 degrees North of East

D + E = 34.7 km @ 39.5 degrees West of North

If you do not please review the process with your teacher.

Please complete this form





Sunday, September 4, 2016

Activity 3 Data Analysis

Objective:  After completing this activity student should:
Be able to identify linear, inverse, and quadratic data relationships.  TA

Activity 3.05  Download and install logger pro.

Instructions

  1. Download the Logger Pro 3 installer on your computer
  2. Run the Logger Pro 3 installer
  3. When prompted for a password, type exploration

Logger Pro 3 Installer Downloads

Choose one of the following downloads below:

Password for Logger Pro 3

During the installation process, you may need a password.
The password is: exploration




Activity  3.10



Read slope of a line. (31)

Watch this video below on linear (direct) relationships, and inverse relationships.


Activity 3.10


Summary:

Relationships: 

None: slope = 0
Direct
  • Direct Linear:  y = mx+b
  • Direct Proportion: y = mx

Indirect:  
  • Inverse:  y = k/x
  • Negative Slope
Square Relations:

y = mx^2

y^2 = mx


Logger Pro Demonstration


Activity 3.30

Read the Circular Relationship exercise.   Make an electronic copy of this exercise in google docs and share it with me.  Answer all the questions on the first page before you come to class on Tuesday.


Activity 3.40

Complete the Circular Relationship exercise as a group and share it with your teacher.

Activity 3.50

Complete this Math Review and check your answers here.

Thursday, September 1, 2016

Activity 2 - Dimensional Analysis

Dimensional Analysis

 Class notes:  Introduction to Dimensional Analysis


Activity 2.10

Watch the 2 video's below on dimensional analysis:
  video 1
  video 2








Read the examples in this handout (12) and do the two problems in the handout.  Post your answers in this form. (16)



Activity 2.20

Read sections 1.3 & 1.4   in the College physics Textbook.  Pages 25 - 30.


Answer the following 3 questions.

37.  To convert 1.8 h to minutes, by what conversion factor should you multiply?

67. Convert each of the following measurements to meters.
a. 42.3 cm
b. 6.2 pm
c. 21 km
d. 0.023 mm
e. 214 m
f. 57 nm

74. Dimensional Analysis : Pressure is measured in
pascals, where 1 Pa 1 kg/ms^2. Will the following
expression give a pressure in the correct units?

(0.55 kg)(2.1 m/s)
________________
     9.8 m/s2



When done with these questions: 
- Check your answers against this answer key Chapter 1 answer key  

Complete this dimensional analysis worksheet, check your answers here 
 
Activity 2.30

Warm-Up: Complete the first problem in this dimensional analysis jabberwocky (30) and  hand in the completed analysis on paper.    You do not need to complete the "spaceship" question.

Activity 2.40  -  Classwork: Accuracy & Precision

Complete this accuracy & precision worksheet .  Do the work in the worksheet and hand in your work.  Refer to section 1.3 in the textbook for definitions of accuracy and precision.