Here's why:
* Projectile Motion: A projectile is an object moving under the influence of gravity only. Its path is a parabola.
* Vertical Velocity: The vertical velocity of a projectile constantly changes due to gravity's downward acceleration.
* Lowest Point: At the lowest point of its trajectory, the projectile momentarily stops moving vertically. It's changing direction from upward to downward motion.
Important Note: While the vertical velocity is zero, the projectile still has a horizontal velocity. This is why it continues moving forward even at the lowest point.
