2.4 Air resistance

Which two of these forces act on parachutes?

• Air Resistance

• Gravity

• Thrust

• Kinetic Energy

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What causes an object to fall faster?

• Smaller surface area

• Larger surface area

• If it has a parachute

• If it is softer

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The larger the surface area of the moving object, the ___________ air resistance there is.

• Less

• More

• Longer

• Quicker

Air resistance pushes against falling

objects and __________________.

• Speeds them up

• Keeps them afloat

• Slows them down

• Spins them

Which has more air resistance?

• 
• 

Air resistance is a force caused by...

• Water pushing against moving objects

• Air pushing against moving objects

• Gravity pushing against moving objects

• Normal force pushing against moving objects

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The more streamlined an object is, the...

• More air resistance

• Less air resistance

• Slower air resistance

• Faster air resistance

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When dropped from the same distance, which will fall to the floor faster?

• 
• 

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An object is falling downward through Earth's atmosphere. In which direction is the air resistance force?

• Down

• Up

• Around the object

• Through the object

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When a falling object stops accelerating and falls at a constant speed, it is

• fluency

• constant velocity

• acceleration

• terminal velocity