The __________ of an object can change by speeding up, slowing down, or changing direction.

The __________ of an object can change by speeding up, slowing down, or changing direction.

• A. Mass
• B. Motion
• C. Speed
• D. Velocity

Answer: (B)

Motion describes how an object moves through space. When you speed up, you increase how fast it covers distance; when you slow down, you reduce that rate; and when you change direction, the path of its movement changes. All of these actions are changes in the way the object is moving, i.e., its motion. Mass stays the same in these situations, and speed is just one part of motion (the rate of movement). Velocity includes speed with a direction, so it would change if the object turns, but the statement as a whole is about motion in general. So the best answer is motion.

Motion describes how an object moves through space. When you speed up, you increase how fast it covers distance; when you slow down, you reduce that rate; and when you change direction, the path of its movement changes. All of these actions are changes in the way the object is moving, i.e., its motion. Mass stays the same in these situations, and speed is just one part of motion (the rate of movement). Velocity includes speed with a direction, so it would change if the object turns, but the statement as a whole is about motion in general. So the best answer is motion.