I have a standard size basketball in my right hand, five kilogram medicine ball.

If I drop them both at exactly the same time, which one will hit the ground first?

Uh, trick.

Quiet, isn't it?

Heavy will go down first for you.

That'll drop faster.

They'll buy the ground.

Actually.

Would've thought they saw him.

Would get plastic.

Yeah, maybe.

Maybe you reckon about.

So why does that make it go faster?

Because it's white.

Pulls it down quicker.

What are we measuring when we say?

Oh, it's heavier.

What are we feeling?

Gravity being pulled to the I guess.

Okay, So which of these objects is being more pulled for the earth?

That one.

The black one.

All right, well, here's what we're gonna do.

I want you to hold both of those above your head.

Down the count of three.

321 Same time.

Exactly the same time with same time.

Is that what you expected to see?

No.

So what do you make of that?

I need to get read more books.

Gravity's gonna pull the same right.

No matter how heavy or how large it is.

But gravity is how lighter, how happy something is.

There must be some force that's striking down, and actually actual weight of its main matter has Mass something.

It's always like the white holds it back in a way that doesn't seem so.

I think you might be hitting on an interesting point there.

Wait holds it back now.

It's not actually wait that holds it back, but inertia.

That's the tendency of matter to maintain a state of motion so to remain at rest of stationary or to continue with constant velocity when in motion.

Big idea is this.

One has more mass, so it's got more weight.

But you can clearly feel there's also got more inertia, which means also more sluggish front.

It tends to resist acceleration so that greater force is required to celebrate it.

At the same rate.

Is this bone like a heavy car trying to accelerate like a heavy car trying to accelerate?

You need more force to get it going.

Exactly.

So what is all that mean?

Well, the force on the medicine ball is greater than the force on the basketball, but it has more inertia and What's really important is that the ratio of forced to inertia is the same for all objects.

So everything accelerates at the same rate and lands at the same time.

Gashes look because it's conducting the heat to the Ice Cube.

Now it's faster than most of us have been captivated by one of these a slinky.

So why doesn't the space station come crashing into the earth?