Waching daily Jun 25 2017

Hello guys!

Welcome to Physics Lesson

Done by Xiongkai, Wu Xiao and Kenne

[Inertia]

I am going to demonstrate the effect of inertia

To do so

it basically is thrugh some simple items

We need an empty bottle

And a piece of cardboard or paper

We have a cardboard here

And a small coin

Now, let's demostrate

[Hypothesis]

First in this experiment

We will test wether this coin piece will fall through...

Fall into the bottle

So let's try out

Okay, as you can see, it can fall through

So what if we put the cardboard on the bottle

Whether or not the coin will still fall through (into) the bottle

After the cardboard is removed

So let's find it out!

[Time for the experiment!]

Remove it fast

Now, as you can see here

The coin has fallen into the bottle

[Explanation]

Inertia

Inertia is the nature of the object to

Not to move or to change in direction (of motion)

And the inertia prevents the coin moving along with the card

when the card is pulled

Therefore, the coin stays at its position

and falls in

That's all

Thanks for watching!