* Gravity's Pull: The moment a ball is released, Earth's gravity acts on it, pulling it downwards. This pull causes the ball to accelerate, meaning its velocity increases over time.
* Acceleration = Change in Velocity: Acceleration is the rate of change of velocity. Since gravity constantly accelerates the ball, its velocity is constantly increasing.
* Initial Velocity: While the ball might start at rest (zero velocity), gravity immediately starts working its magic, giving the ball downward velocity.
In short, even though the ball starts from rest, gravity causes it to gain speed, meaning its velocity is no longer zero when it hits the ground.
