PHYSICS: Great first day of chapter 4! So what’s your theory about the cause of motion? And remind me again why didn’t that pen go flying across the room instead of dropping into the bottle? I love Newton’s first law – the law of inertia! Where else do you see it in action in your world?

So, let’s play with this concept on Monday. Can you use what you know about mass and inertia to find the mass of an unknown object? I know you can! 🙂