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Unit D: Motion, Change and Transportation Safety

Drop spindle with wool

Recycling Yarn Part 2: Spinning

Hands-on Activities

This is the second part of a two-part activity on recycling yarn.

Image showing the physics of flight on a drone.

Resources on Physics and Aerospace

STEM Explained

Resource page including articles and career profiles related to physics and aerospace.

Pitcher holding a baseball

Why Do Curveballs Curve?

STEM Explained

Bernoulli’s equation is key to understanding why curveballs curve.

Mars Science Laboratory Parachute Qualification Testing

Testing Parachutes for Mars

STEM Explained

NASA engineers apply kinematics and dynamics to test parachutes designed specifically to help space probes land safely using aerodynamics.

Space junk

Space Junk

STEM Explained

Litter isn't just a problem on Earth. When litter ends up in space, it can cause collisions and other consequences for satellites, the International Space Station and even for people on Earth!

Tennis Balls

Bouncing Objects

Picture Collections

10 images of some spherical objects such as golf balls and tennis balls that are made of different materials and used for specific purposes

How can you lift a marble off a table without touching it with your hands?

How can you lift a marble off a table without touching it with your hands?

Hands-on Activities

Is it magic? No - it’s physics! Use circular motion to overcome the force of gravity and amaze your family!

Woodpecker on a tree

Do Woodpeckers Get Concussions?

STEM Explained

Pecking puts a lot of force on a woodpecker’s brain. But scientists think woodpecker bodies are adapted to help keep them from being injured during pecking-related collisions.

Artist’s conception of NASA’s Space Launch System

Escape Velocity

STEM Explained

Why do a baseball and a rocket need the same launch speed to get from Earth into space? It has to do with physics and gravitational force.

Billiard balls and a cue stick on a felt-covered table (PIRO4D, Pixabay)

Billiards and Collisions

STEM Explained

The game of billiards shows the principles of collisions, momentum & impulse, and kinetics at work!