* Force: The harder you throw the ball, the more force you apply to it. This force sets the ball in motion and gives it initial velocity.
* Mass: Tennis balls are relatively light, meaning they are easier to accelerate with the same amount of force. This translates to a higher initial velocity compared to heavier objects.
* Air resistance: While air resistance slows the ball down, it's not a major factor in the initial throw. The ball's shape and spin can influence air resistance, but it primarily comes into play as the ball travels further.
* Gravity: Gravity pulls the ball down, causing it to follow a parabolic trajectory. The longer the ball is in the air, the more time gravity has to act on it. This is why the ball eventually comes back down.
In summary: The combination of force applied, the ball's light weight, and the effect of gravity determine how far the tennis ball travels.
