Accelerations

Velocity

Chapter 8

Average velocity Worksheet

Get data

Check Answer key for workbook

Worksheet

11 05

2 Review of Chapter 9 Average Review

3 Calculating displacement using area of a triangle

Number One

Activity One:

What is Inertia? Demo with “Pat”

Activity Two

Besides uniform motion, what are three things that remain constant.

Paradox: Define? Example?

Change: examples of change?

Humor: Is it unique to humans?

Number Two

Questions to focus on:

a)   What “story” is a graph telling? (matching a graph with a vocab term)

b)   How do we use speed and time to calculater more than acceleration? ( How can we have positive velocity but negative acceleration?)

Number Three

Using the area of a triangle ( 1/2bxh) to calculate displacement.

Area of a triangle is ½ base time height

Substitute values of base as time and height as velocity.

Displacement = ½ times sec/1 times meters/sec

Units that cancel out are time!

So final unit is distance or distance from original point.

Example

Total time = 5 seconds

Final Speed = 20 meters / second

D= ½ x 5 sec x 20 m/s

= ½ x 100 m

= 50 meters!

Due Friday

Two graphs of acceleration of cart due to height and mass

Answers to 10 Questions.

Friday’s Class

Vocab Quiz on Friday

No cheat sheet

5 Practice problems on acceleration

Make sure to go over acceleration question related to two objects meeting up or one catching up to another.

Remember to review average velocity questions

Tutorial on Acceleration

https://www.khanacademy.org/science/physics/one-dimensional-motion/acceleration-tutorial/v/acceleration

Due at the End of the month

Check web page for eggsperiment sheet

(5 Questions)

·      Quiz on acceleration

(5 questions)

Next week

Test on Chapter Nine

Pre test for unit Exam

Move and beat Inertia

Resistance is futile

·

Accelerations

Velocity

Chapter 8

Average velocity Worksheet

Get data

Check Answer key for workbook

Worksheet

11 05

2 Velocity and best fit line

3 Calculating motion due to gravity

Number One

Activity One:

Affect of change in height with acceleration of cart

Gathering class data

First four to finish quiz get data

Fifth student in charge of answers for workbook

Activity Two

Affect of change in mass with acceleration of cart

Sample Data for change in height and cart from block 1

·      Change in height

Height               distance 1 meter     time

8                                                     2.78 sec

2.63 sec

2.55 sec

14                                                   1.64 sec

1.56 sec

1.63 sec

19                                                   1.45 sec

1.33 sec

1.31 sec

·      Change in mass

200 grams         distance 1 meter   time

50 grams

25 grams

Challenge

Challenge One

1.   Calculate avg velocity for change in height data.

2.   Plot three lines showing change in velocity for each height.

3.   Calculate the slope of each line

Challenge Two

1.   Plot three lines for each change in mass.

2.   Calculate the slop of each line

Plot data on a line and how to do found in text on page 394

Number Two

https://phet.colorado.edu/sims/html/energy-skate-park-basics/latest/energy-skate-park-basics_en.html

Notice what happens to change in

a)   speed

b)   potential and kinetic energy

when you change the

a)   height of the skater

b)   mass of the skater

Number Three

Using the skate boarder demo and your data from both cart demonstrations, answer these questions on a separate piece of paper.

1)   With the cart, what is the affect of change in acceleration with a change in height?

2)   With a skater, what is the affect of change in acceleration with height?

3)   What is the affect of mass on the acceleration of the cart?

4)   What is the affect of the change with mass on the skater?

5)   Is there a difference in between affect of height between the cart and the skater?

6)   Is there a difference in between the affect of mass of the cart and the skater?

7)   Propose a hypothesis for the cart regarding affect of height and mass for the cart.

8)   Propose a hypothesis for the skater regarding affect of height and mass for the skater?

9)   If there are differences in the affect of gravity upon the cart and the skater?

10)                 Can you explain your answer for question number nine, in regards to rules or laws of physics?

Due Friday

Two graphs of acceleration of cart due to height and mass

Answers to 10 Questions.

Friday’s Class

Vocab Quiz on Friday

No cheat sheet

5 Practice problems on acceleration

Check your answers with answer key

Remember to check Chapter 8 answers

You tube video on Potential and Kinetic Energy

https://www.youtube.com/watch?v=T5WJoup-RD8

You tube of Laws of Newtonian Physics

https://www.youtube.com/watch?v=mn34mnnDnKU

Tutorial on Acceleration

https://www.khanacademy.org/science/physics/one-dimensional-motion/acceleration-tutorial/v/acceleration

Due at the End of the month

Check web page for eggsperiment sheet

·      Two Graphs of acceleration due to change in height and change in mass

·      Problem set on Accelerations (from workbook)

·      (five questions)

Next week

25 Question MC Quiz on Wednesday

·      Resistance to motion is Inertia

·      Force = mass times acceleration

·      For every force there is another equal and opposite force.

·      Yoda says “Do or Do not, there is no try” so do your homework!

·      The force is strong in most Jedi Warriors

·