Whoops!
What was that for?
I'm doing an experiment.
You can come up and watch if you'd like.
Greetings and salutations, I'm Galileo.
I'm doing an experiment on mass and weight.
What's that?
I will show you.
Could you get me those balls over there?
Wow, this one weighs always a lot.
It must be heavier than this one.
Hold on, do you know the difference between mass and weight?
Aren't they the same thing?
No, they are not. Mass is how much stuff is in an object.
We call that stuff matter. It stays the same no matter where it is.
So what's weight?
Weight is the effect of gravity on an object.
It's different depending on the planet that it's on.
So, if I take these two balls and drop them at
the same height at the same time, which one do you think will hit the ground first?
The heavier one, obviously.
Alright, let's find out.
Here watch this.
They both hit the ground at the same time?
Yes, that's because objects of the same shape and size will fall at the same speed
no matter what their weight or mass.
So, let's review what you learned.
Uh, that objects will fall at the same speed no matter what they weigh.
And, also weight and mass are two different things.
Mass is how much stuff is in an object, and weight is what gravity does to that stuff.
Exactly!