Final answer:
The acceleration of a bicycle that increases its velocity from 5 m/s to 15 m/s in 2 seconds is 5 m/s².
Step-by-step explanation:
The acceleration of a bicycle that goes from 5 m/s to 15 m/s in 2 seconds can be calculated using the formula for acceleration, which is the change in velocity (Δv) divided by the time (Δt) over which the change occurs. The acceleration (a) is given by a = Δv / Δt. Therefore, a = (15 m/s - 5 m/s) / 2 s = 10 m/s² / 2 s = 5 m/s².