* Going Up: As the object travels upwards, gravity acts against its motion, causing it to slow down. Its speed decreases until it momentarily reaches zero speed at its highest point.

* At the Peak: At the peak of its trajectory, the object's speed is zero.

* Coming Down: Gravity now pulls the object back down. As it falls, it accelerates, and its speed increases until it reaches the same speed it had when it was first thrown upwards (ignoring air resistance).

Important Note: This assumes we're neglecting air resistance. In reality, air resistance will cause the object to slow down slightly more on the way down compared to the way up.

Key Concepts:

* Gravity: The force that pulls everything towards the Earth.

* Acceleration: A change in velocity (speed or direction) over time.

* Air Resistance: A force that opposes the motion of an object through the air.