A quantity that is a measure of how the velocity of a body changes with time isGroup of answer choicesacceleration.time.distance.speed.

1. Identification of the Problem

The question asks for the term that describes how the velocity of a body changes over time.

2. Relevant Concepts

To determine the correct answer, we need to understand the definitions of the provided terms:

• Acceleration: This is the rate of change of velocity of an object with respect to time.
• Time: This is a scalar quantity that measures the duration of events.
• Distance: This measures how much ground an object has covered during its motion, regardless of its starting or ending point.
• Speed: This is the distance traveled per unit of time but does not consider direction.

3. Analysis of Choices

• Acceleration is directly linked to the change in velocity over a period of time.
• Time, distance, and speed do not measure the change in velocity.

4. Verification and Summary

Since acceleration is defined as the change in velocity per unit time, it is the correct answer to the question.

Final Answer

Acceleration