A Moment of Science

Posts tagged resistance

February 15, 2011

 

sky_diver

How Do Skydivers Control Their Terminal Velocity?

A skydiver's body is in a delicate balance. Gravity tugs her downward with a constant, relentless force, while air resistance pushes her upward.

February 14, 2011

 

Two men skydiving

The Physics Of Skydiving

Every skydiver experiences two different forces: the tug of gravity and the upward push of air resistance.

October 20, 2008

 

Geese flying in "V" formation

Not So Silly Geese

Geese fly in a "V" formation mainly to save energy. Why a "V?"

October 15, 2008

 

Arm with bulging veins

Tricking Your Muscles

Believe it or not, you can trick the muscles in your arms into effortlessly pulling your arms up, as if helium balloons were tied to your wrists.

September 27, 2003

 

Putting Out an Oil Well Fire

When fighting in Iraq, American soldiers encountered numerous oil well fires. Learn how specialized fire fighters put out the fires on this Moment of Science.

September 27, 2003

 

Drugs in Our Waters

Household drugs like painkillers, antibiotics and hormones enter the water system in many ways. For example, some animal feeds contain antibiotics and might flood into rivers with run-off, while other antibiotics are flushed or dumped down sinks and toilets in homes.

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