The change in velocity over time is called what?

The change in velocity over time is called what?

• A. Weight
• B. Speed
• C. Acceleration
• D. Phase change

Answer: (C)

When velocity changes over time, the rate at which that change happens is called acceleration. It describes speeding up, slowing down, or changing direction, all of which involve a change in velocity. In physics, acceleration is defined as the change in velocity divided by the time over which that change occurs, and its units are meters per second squared. For example, if a car increases its velocity from 0 to 20 m/s in 4 seconds, its acceleration is 5 m/s^2. Weight is a force, not a rate of change of motion. Speed is only how fast something is moving at a moment and doesn’t account for changes in velocity. Phase change refers to a change of state of matter, not motion.

When velocity changes over time, the rate at which that change happens is called acceleration. It describes speeding up, slowing down, or changing direction, all of which involve a change in velocity. In physics, acceleration is defined as the change in velocity divided by the time over which that change occurs, and its units are meters per second squared. For example, if a car increases its velocity from 0 to 20 m/s in 4 seconds, its acceleration is 5 m/s^2. Weight is a force, not a rate of change of motion. Speed is only how fast something is moving at a moment and doesn’t account for changes in velocity. Phase change refers to a change of state of matter, not motion.