Final answer:
The cyclist's average velocity when accelerating from rest to 18 m/s over 56 seconds is 9 m/s, using the formula for average velocity of (u + v)/2, where u is 0 m/s (starting from rest) and v is 18 m/s.
Step-by-step explanation:
The student has asked to determine the cyclist's average velocity when a motorcycle accelerates from rest to a speed of 18 m/s over a period of 56 seconds. To find the average velocity, you would use the formula for average velocity when starting from rest, which is v = (u + v)/2, where u is the initial velocity and v is the final velocity. Since the motorcycle starts from rest, u is 0 m/s, and the final velocity v is 18 m/s. Thus, the average velocity would be (0 + 18)/2 = 9 m/s.