I WONDER- What Is Drag?

Drag is a force that opposes motion, making it difficult for objects to move through air. An example is running with a parachute, which fills with air and slows you down. The faster an object moves, the more drag it experiences. Skydivers increase their surface area to increase drag and slow down.

What is the primary effect of drag on an object moving through the air?

• It changes the object's direction.

• It makes the object heavier.

• It speeds up the object.

• It opposes the object's motion.

How does a parachute help in slowing down a runner?

• By changing the runner's direction.

• By increasing the runner's speed.

• By filling with air and creating drag.

• By reducing the runner's weight.

Why do skydivers spread their arms and legs during a free fall?

• To increase drag and slow down.

• To increase their speed.

• To perform acrobatic stunts.

• To decrease their surface area.

What happens to the drag force as an object's speed increases?

• Drag force decreases.

• Drag force remains constant.

• Drag force increases.

• Drag force disappears.

Which of the following best describes the relationship between surface area and drag?

• Smaller surface area increases drag.

• Larger surface area decreases drag.

• Surface area has no effect on drag.

• Larger surface area increases drag.