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# Identify your sources - PowerPoint PPT Presentation

Identify your sources. Inertia. Don’t push it. Action Reaction. May the force be With you. Force it!. Identify your forces. Inertia. Don’t Push It. Action Reaction. May the force be with you. Force it. \$100. \$100. \$100. \$100. \$100. \$100. \$200. \$200. \$200. \$200.

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#### Presentation Transcript

Identify

Inertia

Don’t push

it

Action

Reaction

May the force be

With you

Force it!

Identify your

forces

Inertia

Don’t

Push

It

Action

Reaction

May the force

be with you

Force it

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This is

the rate of

change of velocity

What is

acceleration?

An object is doing this when the distance between it and another object is changing

What is

in motion?

This is

Distance divided by

Time.

What is

speed?

• A place or object

• used as a comparison

• point to tell whether an

• object is moving is called

• This.

What is

A reference

point?

This is the

Definition of

force

What is:

A push or a pull?

A coin resting on a piece of cardboard is placed on a

beaker as shown in the diagram.

When the cardboard is rapidly removed,

the coin drops into the beaker. This is called…

What is

inertia?

A ball rolls through

a hollow semicircular tube lying

flat on a horizontal tabletop.

This shows the motion the ball will take

True or false. Fix it if false.

What is

false?

Newton’s first

Law states this

What is

Objects in motion, stay in motion,

And objects at rest, stay at rest

Until acted upon

By an unbalanced force?

This is the force that

should stop you if the

car stops short.

What is

The seat belt?

NOT what is your

face hitting the

windshield? -5000 point

This is the

definition

of inertia

What is

The tendency of an

object to resist change

In motion?

• A student pushes against a tree

• with a force of 10 newtons (N).

• The tree does not move.

• This is the amount of force

• exerted by the tree on the student.

What is

10 N?

• The force of an object, with a certain mass accelerating at a certain rate,

• can be determined by using the equation below.

• force = mass X acceleration

• Of the following obejcts, this object would have the greatest force:

• a 5-kg object accelerating at 10 m/s2

• a 5-kg object accelerating at 20 m/s2

• a 20-kg object accelerating at 4 m/s2

• a 20-kg object accelerating at 3 m/s2

• What is

• a 5-kg object

• accelerating

• at 20 m/s2?

This law is why the boy

Has to pull harder on

The big rock to move it.

What is

Force = mass x acceleration

So If the mass gets larger

The force to pull it

must be larger?

This is what

North and north

poles do.

What is

Repel or push

apart?

Newton’s second

Law relates mass,

force,

and acceleration

In this mathematical

formula.

What is: F= m x a

Or force equals

mass times

acceleration?

Forces which are equal

And opposite in direction

move an object in

this direction

What is

Balanced forces

Don’t move objects ?

A balloon can be used to

Show

Newton’s third

Law in this diagram.

What is: for every

Action there

Is an equal and

Opposite reaction

This is what happens when

A skater pushes another skater

What is: they both

Go backwards

with equal

And opposite force?

A student on a skateboard throws

Something heavy. He moves in this direction.

What is

equal and opposite

to the force of the throw?

The reason the girl

Fell in the

Water is

described by

this law

What is

Newton’s third law: for

Every action there is an

Equal and opposite

reaction?

These are

Two characteristics

That affect the

force of friction.

.

What are the surface

Textures and how hard

You press them together?

A balloon and

A bowling ball

Are dropped on the moon.

This is the one that hits first

What is

They hit at the same time?

This is what we could add

To reduce

Friction on the

Box sliding up the ramp.

What are rollers

OR oil

OR wax?

Friction

Generates this form

Of energy

What is

heat or thermal?

These two

Forces affect all

Motion on earth

What are

Friction and gravity?

Equal forces

Acting in opposite

directions

Move objects in

This direction

What is

Balanced forces

Don’t move objects ?

This is the net force

What is

=

This is the net force

What is ?

This is the net force

What is 0?

Acceleration can be

Described as these

three motions

What is: Acceleration can

be speeding up

Slowing down, or

changing direction?

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Final

Jeopardy

Write the Final Question Here

Write

the Final