Air resistance

What causes an object to fall faster?

• Smaller surface area

• Larger surface area

• If it has a parachute

• If it is softer

The more streamlined an object is, the...

• More air resistance

• Less air resistance

• Slower air resistance

• Faster air resistance

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

Look at the pictures of the cars. Which car will have the most air resistance force acting upon it? They will be moving at the same speed.

• 
• 
• 
• All will have equal air resistance force.

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

• fluency

• constant velocity

• acceleration

• terminal velocity

What is a parachute designed to maximize?

• Gravity

• Air Pressure

• Air Resistance

• Thrust

Air resistance pushes against falling

objects and __________________.

• Speeds them up

• Keeps them afloat

• Slows them down

• Spins them

What makes objects fall to the earth

• Gravity

• Wind

• Force

• Air Pressure

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

• 
• 

Which two of these forces act on parachutes?

• Air Resistance

• Gravity

• Thrust

• Kinetic Energy