Here's why:
* Gravity's Pull: When an object is thrown upwards, gravity constantly acts on it, slowing it down.
* Zero Velocity at the Peak: At the highest point of its trajectory, the object momentarily stops moving upwards before it starts falling back down. This means its velocity, which is the rate of change of its position, becomes zero.
* Instantaneous Speed: Instantaneous speed is the speed at a specific moment in time. Therefore, at the highest point, the instantaneous speed is zero.
It's important to note that even though the speed is zero, the object still has an acceleration due to gravity, which is always acting downwards. This means the object will start accelerating downwards immediately after reaching its highest point.
