Velocity in the y direction, denoted as vy, refers to how fast an object is moving vertically upwards or downwards.
Velocity in the y direction (vy) cheat sheet for homework
Velocity in x direction (vx): Velocity in x direction represents how fast an object is moving horizontally left or right.
Instantaneous velocity: Instantaneous velocity is the velocity of an object at a specific moment in time.
Average velocity is the total displacement of an object divided by the total time taken.