Challenging the Wind: Can We Go Faster?

The video explores whether it's possible to travel faster than the wind using a sail-powered vehicle. Initial experiments with a caddy and fan show limited success. The team then consults an aerodynamics expert and conducts tests in a wind tunnel. By adjusting the sail's position, they achieve speeds faster than the wind. The video concludes with the idea of using a rigid sail for more precise control.

What inspired the team to explore the concept of going faster than the wind?

• A scientific journal article

• A question from a social media user

• A challenge from a rival team

• A classroom experiment

What was the main goal of the initial experiment with the sailing caddy?

• To exceed the speed of the wind using a fan

• To calculate the weight of the caddy

• To measure the wind speed

• To test the durability of the caddy

What was the maximum speed achieved by the sailing caddy without a person on board?

• 4 kilometers per hour

• 62 kilometers per hour

• 10 kilometers per hour

• 6.2 kilometers per hour

What did David and Benoit discover about the sail's position in the wind tunnel?

• It should be at a 90-degree angle

• It should be perpendicular to the wind

• It should be parallel to the wind

• It should be facing the wind directly

How can the speed of the land yacht be increased according to the wind tunnel experiment?

• By adjusting the sail to a 45° angle

• By reducing the weight of the yacht

• By increasing the size of the wheels

• By using a larger fan

What is a potential solution to further increase the speed of the yacht?

• Using a rigid sail

• Using a flexible sail

• Reducing the sail size

• Adding more fans

What is a key consideration when designing a rigid sail?

• The material of the yacht

• Its color

• The curve and angle of the sail

• Its weight