BELL RINGER

Title your pages: Page 69: Unit 2 Student Reflection Page 70: Unit 2 Parent Review Page 71: Table of Contents (Only if you

don’t have Table of contents in the front of your notebook; Otherwise Skip this page)

Page 72: Unit 3: Rate Page 74: Rate in Mechanical Systems 1 Page 76: Rate in Mechanical Systems 2

When finished, begin your reflection. Parent Review Due: November 2/3,

2011 3 WEEK TEST ON NOVEMBER 2/3,

2011!

3 WEEK TEST ON NOVEMBER 2/3, 2011!

You have 15 minutes to finish your data table from lab 2.3

Get in your group and answer all five questions

Put in “IN BOX” when you are completely done

I don’t want any incomplete work in there!

Unit 3: Rate, Page 72

Acceleration

Heat Transfer

Electric Current

TODAY’S DATE

Draw a picture in each section.

3 WEEK TEST ON NOV 2/3, 2011!

Objectives

Define speed, velocity, and acceleration. Explain the difference between speed and

velocity. Explain the difference between velocity and

acceleration. Use speed, velocity, and acceleration to

solve problems involving linear motion.

**Write Essential Question under the title on page 74**Essential Question: Can objects that change still remain constant?

3 WEEK TEST ON NOV 2/3, 2011!

Set up your “folda-flap” (you will turn in at the end of the period)

Scalar (magnitude only)

Vector (magnitude AND direction)

GUESS

GUESS

GUESSG

UESS

Set up your “folda-flap”

Outside Flaps

Distance (d or Δd)"how much ground an object has covered" during its motion.

SI Unit: meters, mKilometers, km

Speed (v or Δv)"how fast an object is

moving.“

SI Unit: meters/second, m/s

Displacement (d or Δd)

"how far an object is from where it started"

SI Unit: meters, m In a certain direction

(West)

Velocity (v or Δv)"how fast AND the

direction an object is moving.“

SI Unit: meters/second, m/s

In a certain direction, northeast

3 WEEK TEST ON NOV 2/3, 2011!

Inside Flaps

DistanceA student walks 25 m

east from his car to his class then 16 m west to the gym. What is the total distance traveled

by the student?

Inside Flaps

Displacement (d or Δd)

A student walks 25 m east from his car to his class then 16 m west to the gym. What is the displacement traveled

by the student?

Inside Flaps

Speed (v or Δv)Mary walks to a store

210 m to the north for 30 minutes. What was Mary’s walking speed?

Inside Flaps

Velocity (v or Δv)Mark walks to a store

210 m to the north for 30 minutes. What was

Mark’s walking velocity?

Solve the problems

G

U

E

S

S

Rate ChallengeHEADS UP!

http://www.youtube.com/watch?v=tQIb94OrA6s&feature=related

Bring your WHEELS and materials for CAR BODY!

I will provide the axle (wooden sticks) and the rubber band.

Building and/or testing will be on November 4/7 2011.

3 WEEK TEST ON NOV 2/3, 2011!

Bell ringer –Study/Get organized for your test

Make sure you get YOUR notebook ready, a sheet of

paper numbered 1-15, a calculator and a pen/pencil.

During the Test…..

I will come by and check your student reflection/ Parent Review while you test.

NO phones, talking or cheating will be tolerated. I will take the test away!!

Do NOT write on the test.After test, pick up problems and

begin working on them.You have 45 minutes for the test!!

Rate in Mechanical Systems 2, Page 69

Instantaneous Speed - the speed at any given instant in time. Speed (v) = Dd

DtAverage Speed - the average of all

instantaneous speeds; found simply by a distance/time ratio.

Average Speed (vavg)= Dd = d1+ d2

Dt t1+ t2

76

Rate in Mechanical Systems 2, Page 69

Acceleration, a Is a vector quantity that is defined as

the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity by – Speeding up Slowing down Changing direction

Is negative when slowing down OR speeding up in the negative direction (deceleration)

SI Unit: meters/seconds2, m/s2

76

Rate in Mechanical Systems 2, Page 76Acceleration

Acceleration = Velocity change (Dv) Time Interval

(Dt)

Average acceleration = A avg = Dv = v1 - v2

Dt t1 - t2

An student rolls a pencil at his desk from north to south. The velocity as it left his hand was 0.23 m/s and it came to a stop in 4 seconds. What is the acceleration of the pencil?

76

Exit Slip: On Quarter Sheet

On the paper slips, address the following in complete sentences about Mechanical Rate:

3 - Things you learned2 - Things you found interesting1 - Question you still have

Table of Contents

Left Pages Page #

Right Pages Page #

Rate in Mechanical Systems 1 67

Rate in Mechanical Systems 2 69

3 WEEK TEST ON NOV 2/3, 2011!

Categorizing

How would you assign the words into two groups? What would be the heading for the two groups?

Distance

Displacement

Speed

Velocity

3 WEEK TEST ON NOV 2/3, 2011!