Here's why:
* Projectile Motion: When an object is launched into the air (neglecting air resistance), it follows a parabolic path. This path is governed by gravity, which constantly pulls the object downwards.
* Vertical Velocity: As the object rises, its upward vertical velocity decreases due to gravity's deceleration. At the highest point, the object momentarily stops moving upwards before it begins to fall back down.
* Zero Vertical Speed: Since the object is neither moving upwards nor downwards at the highest point, its vertical speed is zero.
Important Note: While the vertical speed is zero, the object still has a horizontal velocity. This is why projectiles continue moving horizontally even at their peak.
