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
Forests could help detect ‘ghost particles’ from space
If trees could act as natural antennas, one physicist proposes that they just might pick up signals of hard-to-spot ultra-high energy neutrinos.
- Physics
Physics explains what happens when a lawn sprinkler sucks in water
Experiments with a floating sprinkler revealed the surprisingly complex physics behind a simple question.
- Physics
Skipping stone physics could aid net-tangled whales and more
The unexpected movement of buoys and spheres in water could lead to redesigns for fishing nets and ships.
- Physics
‘Feathering’ helps explain Gentoos’ record-breaking swim speed
Videos and computer analyses reveal the secrets of the penguins’ superspeed. The results could inspire future underwater vehicles.
- Physics
How salty does the sea have to be for an egg to float?
Some objects float on top of the ocean, and other objects sink to the bottom. Why? Try this eggs-periment to find out!
- Physics
Scientists Say: Force
When an object experiences a force, its change in motion — or acceleration — depends on its mass.
- Physics
When dominoes fall, how fast the row topples depends on friction
Two types of friction help determine how quickly a line of dominoes collapses, computer modeling shows.
- Physics
Scientists Say: Inertia
Inertia is the tendency of objects to resist changes in their motion.
- Physics
Explainer: The fundamental forces
Four fundamental forces control all interactions between matter, from the smallest subatomic particles to the largest structures in the universe.
- Tech
A new device uses atoms’ quantum weirdness to peer underground
Quantum sensors like this one could monitor magma beneath volcanoes or uncover archaeological artifacts.
- Physics
Explainer: How do mass and weight differ?
Learn why these terms aren’t the same and which to use where. And should you report your results in kilograms? Pounds? If in doubt, try using newtons.
- Physics
Analyze This: Masks cut the distance that spit droplets fly
Both cloth masks and surgical masks reduced the distance spit traveled from a person talking or coughing by at least half, compared with no mask.
