Air Resistance, Sails, Propellers
Remember…
• Air Resistance- force of air pushing against the
motion of an object
• Air resistance is a type of friction
Watch This!
Air flow moving around and object
• Sails and propellers both help
with air resistance.
How can sails help with air resistance?
How can propellers help with air
resistance?
Your Task…
• Using the rubber band energy that you have
discovered, you will be documenting how the
travel of the car changes with air resistance.
Directions
• First, use the rubber band to create 3 trial
runs (2 twists, 5 twists, 10 twists). Record the
times in your science notebook of how long it
takes to travel a certain distance.
• Figure out how to attach the cardboard piece
to your car to make a flat sail.
• Now use the rubber band and same twists to
see how the “sail” effects the moving of the
car.
Think About This…
• What did you observe when your vehicle
moved with the sail influencing the motion?
• How could you have adapted the sail so that it
would have less effect on your vehicles
motion?