**Build an Electric Motor.**

The kit contains magnet wire, a magnet, 2 wires,

2 paper clips, a foam base and a battery band.**You will need a 1.5 Volt Battery.**

to the image on the next slide.

the greater the force it takes to overcome the inertia.

stays at rest

unless acted upon

by an unbalanced force.

stays in motion

unless acted upon

by an unbalanced force.

that you are made of

is called your mass!

You are made of the same amount of mass whether you are on the Earth, the Moon or in outer space.

Your weight is dependent

on the pull of gravity,

your mass is not.

How do you measure mass

independent of gravity

with a balance scale!

is a push

or a pull.

unit of

measurement

for force

force in newtons!

that PULLS objects toward each other.

Earth's gravity keeps you and

penguins on Antarctica

on the ground.

It makes objects like apples

fall down to Earth.

Your weight is a measure of

the PULL of gravity on Earth.

If you go to the Moon,

does your weight or mass change

as being due to a curvature of space

that warps space around an object,

such as a star or a planet.

Your mass remains the same.

Velocity

Acceleration

from one end to the other?

stop watch app

the length of

a long hallway

or path.

measure

What was your SPEED?

or cell phone application.

10 feet per second.

was 10 feet (3m)

answer.

in 10 seconds,

what is your speed

for driving in your neighborhood?

Is it 25 miles per hour (mph) or

40 kilometers per hour (kph)?

If you go the speed limit,

how long will it take your car

to go 25 miles (40 kilometers)

Perhaps it is

70 mph or

as much as 120 kph.

If the speedometer in your car reads 60 mph,

how long will it take your car to go 30 miles

is about 600 mph or 965 kph.

About how many hours would it take

to fly 3,000 miles or 4,825 kilometers

terrain, surface, load, culture, effort, and fitness.

The average adult walking speed at crosswalks is about

5.0 kilometers per hour (km/h),

or about 1.4 meters per second (m/s),

or about 3.1 miles per hour (mph).

That is a 6 with 12 zeros after it!

It is also ONE light year.

186,000 miles per second (mps)

or 300,000 kps.

How many miles

can light travel in a year

BUT velocity ALSO measures something ELSE!

To figure out what else velocity measures,

let’s clock your speed again.

the SAME distance

first up the path

in EXACTLY the same

amount of time?

and EXACTLY three seconds to come back.

Your SPEED would be the same in both directions

but your velocity would be different!

Can you guess what makes velocity different from speed?

but it always changes your velocity.

both speed and direction!

to go at a constant, unchanging speed?

sped up.

slowed down.

It was neither your slowest nor your fastest time.

Your speed and velocity were changing from moment to moment as you ran.

an acceleration!

an acceleration

(deceleration).

is also an acceleration!

with more mass

also have more inertia

weight with a

not massless. You will still be

made of the same amount of matter.