Examine the graph provided below, which portrays the velocity of a racebike as a function of time. Determine whether there are any periods during which the racebike encountered uniform acceleration.

• A. between t = 10 s and t = 15 s
• B. between t = 10 s and t = 25 s
• C. between t = 5 s and t = 10 s
• D. between t = 15 s and t = 25 s

Answer: (D)