what is inertia
what does newtons first law say about an object that's sitting still? What about one that's already moving?
it will stay in motion until something stops it.
Think about tug of war where nobody moves and then one where one team wins which one is balanced and which one is unbalanced whats the difference
One is balanced and one is unbalanced
think about riding in a car or on a bus when it stops fast or turns
the bus stops but you don't
Pick pairs of things like a bowling ball and a soccer ball or a truck in a bike which has more inertia
The bowling ball and the truck have more inertia because they're weight pulls them down a slope or a hill
gravity
A force that pushes down
what does it take to change what an object is doing?
a type of force
a book sitting on a table test forces on it why doesn't it move
Gravity and inertia
Think about sports a hockey puck sliding on Ice a ball rolling on grass escape bar skateboard hitting a rock
their motion stops but you don't so you slide off and move fast
Is it harder to start a heavy object moving or to stop it or both
To stop it cuz it gains speed fast
Inertia
When something stops but you don't
Who was Isaac Newton and why is this called his first law
Isaac Newton was a mathematician and this is called his first law because he has many laws
When you kick a soccer ball what which kind of force is that how do you know
Pushing Force because you're moving the ball forward as in a push
Why does the rolling ball finally stop if objects emotions stay in motion
friction slows it and gravity does the rest
Imagine you're on the moon and you see a massive steel ball falling on you would you get squished or not
No because gravity makes things slower
Net Force
The total amount a force going a direction
does inertia work on the moon?
yes there is still gravity but little
when you walk with a grocery cart what force is it
push
why would a car not go the same speed if he had it on the max
gravity friction change
which is will go down the slope faster car on sandpaper or car on tape
car on tape
friction
A force from textures that stops things from moving
if inertia keeps thing the same until interrupted by a force what is happening
constant speed or staying still
if someone is asleep and they wake up what is happening
transition from staying still until a force interacts
which is faster a heavy ball going down a hill or a light one
heavy
Is it harder to stop something heavy at a slow rate or something super light at a super fast rate
Something super slow cuz it may gain speed
Newtons 1st law
an object emotion stays in motion unless it is stopped by a force