The rate at which velocity changes is called a. acceleration. b. constant speed. c. average speed. d. displacement.

Step 1: Define the Problem

Identify the key components of the question that need to be addressed:

• Determine the term that describes the rate at which velocity changes.

Step 2: Break Down the Problem

Divide the problem into smaller, manageable parts:

• Understand the definitions of each option provided.

Step 3: Apply Relevant Concepts

Use appropriate academic theories or formulas to solve each part of the problem:

• Acceleration: The rate of change of velocity with respect to time.
• Constant Speed: Speed that does not change over time.
• Average Speed: Total distance traveled divided by the total time taken.
• Displacement: The change in position of an object.

Step 4: Analysis, Verify and Summarize

Analyze each part in detail if necessary, carry out the calculations by steps. Verify the calculations result and summarize the findings:

• The term that describes the rate at which velocity changes is "acceleration."

Final Answer

The rate at which velocity changes is called a. acceleration.