When you are describing the rate that a race car goes around a track, should you use the term speed or velocity to describe the motion? Can the velocity of the car change without changing the average speed of the car? Please answer in 100 words!

When describing the rate at which a race car goes around a track, it is appropriate to use the term "velocity" rather than "speed" because velocity takes into account both the magnitude and direction of motion. Speed, on the other hand, only tells us the magnitude of the motion. Additionally, velocity provides a more complete description of the car's overall movement within the track, including any changes in direction.

Yes, the velocity of the car can change without changing the average speed. This is because velocity involves both magnitude and direction, while speed only involves magnitude. For example, if a race car moves consistently in a circle around the track but at varying speeds, its average speed remains constant, but its velocity changes as it constantly changes direction. Therefore, the car's velocity can change without affecting its average speed.