Baseball: What makes a curveball curve

The video tutorial explains the construction of a baseball, focusing on the materials and stitching that affect its trajectory. It details the mechanics of throwing a curveball, including the grip and wrist movement, and how the stitching creates an imbalance in airflow, affecting the ball's path. The tutorial also covers the forces at play, such as pressure differences and gravity, and how they influence the curveball's trajectory. Additionally, it discusses various types of pitches, like the slider, slurve, and screwball, and their similar mechanics.

What is the role of stitching on a baseball?

• To make the ball heavier

• To improve the ball's durability

• To influence the ball's trajectory

• To make the ball more colorful

How does a pitcher grip the ball to throw a curveball?

• With the palm

• With the thumb and middle finger

• With the index and ring fingers

• With the pinky and thumb

What effect does the stitching have on the airflow around a baseball?

• It stops the airflow

• It speeds up the airflow

• It creates an imbalance in airflow

• It balances the airflow

Why do pitchers throw different types of pitches?

• To reduce the ball's spin

• To increase the speed of the ball

• To make the game longer

• To confuse the batter

Which of the following is NOT an off-speed pitch similar to a curveball?

• Slider

• Fastball

• Slurve

• Screwball