Answer: An object's velocity can be different from its average velocity when the object's velocity is changing over time.
Average velocity is calculated by dividing the total displacement of an object by the total time taken. It represents the overall motion of an object during a given time interval. If the object's velocity remains constant during that time interval, then its velocity and average velocity will be the same.
However, if the object's velocity is not constant and changes during the given time interval, then its velocity at any specific moment may be different from its average velocity. This occurs when the object's speed or direction changes at different points in time, resulting in variations in its instantaneous velocity.
To summarize, an object's velocity can differ from its average velocity when there are changes in its speed or direction during the time interval under consideration