Friction & Air resistance

Which two of these forces act on parachutes?

• Thrust

• Gravity

• Air resistance

• Kinetic Energy

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What causes an object to fall faster?

• Smaller surface area

• Larger surface area

• If it has a parachute

• If it is softer

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Another name for air resistance is...

• Buoyancy

• Streamline

• Gravity

• Drag

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

• Less

• Longer

• More

• Quicker

Air resistance pushes against falling

objects and __________________.

• Keeps them afloat

• Spins them

• Speeds them up

• Slows them down

The larger the parachute the ____________

• Less drag

• More surface tension

• Less air resistance

• More drag

Which has more air resistance?

• 
• 

Tags

NGSS.MS-PS2-2

Air resistance is a force caused by...

• Air pushing against moving objects

• Water pushing against moving objects

• Normal force pushing against moving objects

• Gravity pushing against moving objects

Tags

NGSS.MS-PS2-2

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.

• 
• 
• 

The rougher the surface, the faster an object will travel over the surface.

• True

• False