How are ping pong balls affected by by air?

Ping pong balls are affected by air primarily through drag and buoyancy. As they move through the air, drag opposes their motion, slowing them down and altering their trajectory. Additionally, the air pressure inside the ball contributes to its buoyancy, allowing it to float and remain stable during play. Changes in air density, such as at high altitudes, can further influence their performance by affecting their speed and spin.