HS-PS2-1
Analyze data to support the claim that Newton's second law of motion describes the mathematical relationship among the net force on a macroscopic object, its mass, and its acceleration.
- Physics
Falling through Earth might be a long and fruitless trip
A classic physics problem asks what would happen if you plunged through Earth’s center. A new study contends you could never make it to the other side.
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Teen gymnast finds how best to keep her grip
Unsatisfied with anecdotal opinions on which type of gymnastics chalk was best, a teen used science to find out for herself.
- Health & Medicine
Why Paralympic sprinters have trouble with curves
Whether an artificial leg is on the right or left side of the body may affect how fast runners can take a turn.
- Physics
Einstein taught us: It’s all ‘relative’
One hundred years ago, a German physicist shared some math he had been working on. In short order, his theory of relativity would revise forever how people viewed the universe.
- Tech
Make your own mini hovercraft
Hovercraft aren’t just the cars of the future. You can make your own with just a few household items.
- Physics
Raindrops break the speed limit
Raindrops shouldn't be able fall faster than what is known as their terminal velocity. But no one told the rain. Researchers have found droplets breaking that speed limit.
- Physics
Explainer: How lasers make ‘optical molasses’
Light can bump an atom. Bump it from several different directions at once and even a fast-moving atom will instantly freeze its motion — and chill it to a temperature of nearly absolute zero.
- Physics
Baseball: From pitch to hits
Radar or cameras track the path of virtually every baseball in major league stadiums.
- Space
Wanted: Garbage collectors in space
Scientists say we should clean up the cosmos now to avoid crashes in the future.
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