**Motion is Relative!**

1. What causes motion?

2. How can we describe the "absolute motion" of an object?

**Vectors**

Newton's Laws

1. Inertia - An object at rest tends to stay at rest, while an object in motion tends to stay in motion unless acted on by an unbalanced net force.

Calculating Motion...

Inquiry Lab - Physics Olympics!

Physics Minute!

**Physics in**

**MOTION!**

Speed - Velocity - Acceleration - Momentum

Scalars vs. Vectors

Notes

2. F=ma - The acceleration of an object depends on both its mass and the net force being applied to the object.

3. Action/Reaction - For every action there is an equal and opposite reaction.

a magnitude or quantity

magnitude and DIRECTION

"how much"

"how much"

"which way"

Examples

Time

Temperature

Money

Speed

Examples

Force

Velocity

Acceleration

Vectors are represented with arrows...

How Much

Which Way

Lex I: Corpus omne perseverare in statu suo quiescendi vel movendi uniformiter in directum, nisi quatenus a viribus impressis cogitur statum illum mutare.

Lex II: Mutationem motus proportionalem esse vi motrici impressae, et fieri secundum lineam rectam qua vis illa imprimitur.

Lex III: Actioni contrariam semper et æqualem esse reactionem: sive corporum duorum actiones in se mutuo semper esse æquales et in partes contrarias dirigi.

Vectors are ADDITIVE!

Can be combined/simplified

100m

50m

50m

Components

Resultant

Change in motion

Linear Vectors

All of the individual parts...

total of all combined...

Do you have to go in order?

2

2

3

3

1

1

5

5

START

END

Student Example...

Cool Example of Vectors in Action

Vector Addition Examples

+

1 N

4 N

=

3 N

+

1 N

4 N

=

5 N

+

=

Balanced Force (no motion)

3 N

3 N

Angled Vectors

50 N

20 N

20 N

50 N

20 N

50 N

Parallelagram Rule...

Or try the "Tip to Tail" Method...

Same result!

FRAME OF REFERENCE

Key Questions...

Motion "DEPENDS" on your

*See Frame of Reference Prezi...

May the FORCE be with You!

HELIUM TENTPOLE ACTIVITY :-)

A push or a pull causing a change in motion

Speed = Distance / Time

Units: m/s

How to measure RATES

(ratios of displaced position over time)

Interactive Flow Chart Notes

Book Notes

Objective -

Compare and contrast ways we can quantify and measure motion.

Task -

Create a flow chart in your journal to organize your book notes on small flappable note cards.

PART ONE:

1. Take two index cards and cut them in half.

2. Read the blue motion book (pg. 14 - 29) to analyze the four types of motion below

Speed

Velocity

Acceleration

Momentum

3. Sketch to Stretch - After reading about each topic, draw a title for each type of motion onto each of your 4 mini notecards

4. Trace the flow chart to the right into your journal (Tip: the boxes should be the same size as your four note cards)

?

?

?

?

Title Must Include a WORD and PICTURE (based on the paragraphs you read)

Advanced = Word Art: The actual word of each title depicts art that represents the type of motion you read about :-)

Momentum GOLF!

Check For Understanding...

Work & POWER!

WORK

POWER

Related to

Definition: Applying a force over a given distance.

Definition: How quickly you can do work - the time it takes you to complete the work.

Calculation Equation

W = F * D

Work

Force

Distance

Calculation Equation

P = W / t

Work

Time

Power

UNITS...

Newton Meter (kgm/s )

- or - JOULES ( J)

2 2

UNITS...

Joules per Second

- or - Watts ( W)

Horsepower = US Units

1. Three students help to push a broken down car to the nearest gas station. They push with a combined force of 1200N. The gas station is 400 meters away. How much work must they do to reach their goal?

Example...

1. It took 5000 Newtons of force from an elephant to pull a bale of hay across a field. The field was 500 meters long. It took 30 minutes to get it across the field. How poweful was the elephant?

Example...

metric

(Not Metric)

1 HP = 746 Watts

Journal Format

Motion Graph Analysis

Physics Olympics

Problem Statement:

Materials:

Procedure:

Data Table:

Analysis Questions:

What quantities can

help to figure out the winners of a race?

1. Selection of toys

2. Measuring tape

3. Stopwatch

Numbered list of steps that your group will follow as a strategy when turned loose in the hallway :-)

Event

Dist.

Time

Conclusion Questions:

Complete sentence answers to #1-5 on lab sheet!

Complete sentence answers to #1-7 on lab sheet!