Terms in this set (13)
What is air resistance?
The unseen force that air exerts in the opposite direction of a moving object.
What four factors impact air resistance?
shape, size, speed and density
What does not impact air resistance?
weight or mass
How does shape determine air resistance?
The flatter the object, the more air resistance
A rounded shape, the less air resistance
How does size determine air resistance?
The larger the surface area, the more air resistance
The smaller the surface area, the less air resistance
How does speed determine air resistance?
The faster the object moves, the more air resistance
The slower the object moves, the less air resistance
How does density determine air resistance?
Less dense, the more air resistance
More dense, the less air resistance
What are some uses of air resistance?
parachute, kite flying, Frisbee, airplane
What things can reduce air resistance?
paper airplane, bullet, arrow, sports car (think...what do all these things have in common?)
What is gravity?
An unseen force that pulls all objects towards the center of the Earth.
What is the rate of acceleration due to gravity?
9.8 m/s/s or m/s2 (meters per seconds squared)
What is terminal velocity?
The final speed an object reaches as it falls.
What is a vacuum?
A place where air has been repoved.
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