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Forces

a red car crashes into the back of a yellow car

Crash: Seatbelts, Airbags, and the Science of Safety

Accidents happen, that’s a fact of life. There are countless things we can predict. There are countless things we can’t, especially when it comes to people and how they react in times of shock, surprise, or crisis.

There is one thing we can always do, though. Learn.

What is Newton’s Third Law?

Newton’s Third Law of Motion is my personal favorite. Why? Because it serves a dual purpose as good life advice. It goes like this. When you apply a force, expect an equal amount of force to be applied back. It also just so happens that Newton’s Third Law is also one of the most fun … Continue reading What is Newton’s Third Law?

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Motion Commotion

graphic defining acceleration as a change in velocity over time

What is acceleration?

ACCELERATION IS THE CHANGE IN VELOCITY OVER TIME, JUST LIKE SPEED IS THE CHANGE IN DISTANCE OVER TIME.  Have you ever been on a roller coaster? They start off slow. You can move around and lean forward in your seat with almost no energy, but when they start to speed up, like at the first … Continue reading What is acceleration?

What is Momentum?

Changing speed is different for different things depending on their current speed and size, or their mass.  To understand this, we use something called momentum. MOMENTUM IS WHAT WE GET WHEN WE MULTIPLY THE MASS OF AN OBJECT BY ITS VELOCITY. A large semi-truck traveling at 60 mph will have more momentum than a small car at the … Continue reading What is Momentum?

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