Here's why:
* Projectile Motion: A projectile follows a parabolic path due to the constant force of gravity acting on it.
* Vertical Velocity: At the highest point of its trajectory, the projectile momentarily stops moving upwards. It hasn't yet started falling back down.
* Horizontal Velocity: While the vertical velocity is zero, the projectile still maintains its horizontal velocity. This is why it continues moving forward even at the peak of its flight.
Important Note: This assumes we're neglecting air resistance. In real-world scenarios, air resistance would slightly reduce the horizontal velocity as well, but the vertical velocity at the top would still be essentially zero.
