Final velocity refers to the instantaneous velocity of an object at a specific point in time or at the end of its motion. It represents how fast and in what direction an object is moving when it reaches its final position.
Initial velocity refers to the instantaneous velocity of an object at the start of its motion or at a specific point in time before any acceleration takes place.
Speed is defined as how fast an object moves without considering its direction. Unlike velocity, it does not take into account the object's displacement.
Time is a fundamental quantity in physics that measures the duration or interval between two events. It plays a crucial role in determining changes in velocity and position.