Final answer:
When a coin is tossed into the air, its velocity and acceleration change as it moves upward, reaches its peak, and moves downward.
Step-by-step explanation:
When a coin is tossed into the air, the direction of its velocity changes as it moves upward, at its peak, and while it is moving downward.
When the coin is moving upward, its velocity is upward and its acceleration is downward. This is because gravity is constantly pulling the coin downward, causing its velocity to decrease.
At its peak, the velocity of the coin is zero, but its acceleration is still downward. This means that the coin momentarily stops moving upward before reversing its direction and starting to move downward.
While the coin is moving downward, its velocity is downward and its acceleration is also downward. The force of gravity continues to pull the coin downward, causing its velocity to increase.