1. Gravity: This is the most obvious force. It constantly pulls the ball downwards, causing it to slow down as it goes up and speed up as it comes down.
2. Wind: This is where the "windy day" part comes in. The wind can push the ball in different directions, altering its horizontal trajectory. A tailwind will push the ball further, while a headwind will slow it down. A crosswind will push it sideways.
3. Air Resistance (Drag): This is the force that opposes the ball's motion through the air. It's a more subtle force, but it gets stronger as the ball moves faster. Air resistance slows the ball down both vertically and horizontally.
4. Buoyancy: While not as significant as the others, air does have some buoyancy, a force that pushes upward on the ball. This effect is very small compared to gravity.
Let me know if you'd like to go into more detail about any of these forces!
