What does 'Vhor' represent when calculating projectile motion?

In the context of projectile motion, 'Vhor' specifically represents the horizontal velocity of the projectile. This component of velocity remains constant throughout the flight of the projectile, assuming negligible air resistance. In projectile motion, the overall motion can be broken down into two independent components: horizontal and vertical. While the vertical component of velocity is affected by the acceleration due to gravity, the horizontal component does not change in magnitude, which is crucial for predicting the range and trajectory of the projectile. Thus, recognizing 'Vhor' as the horizontal velocity is essential for solving problems related to projectile motion accurately.