Final answer:
To determine the skier's acceleration, use the formula a = (Δv) / t, which yields an acceleration of 2 m/s² as the skier's velocity changes from 5 m/s to 15 m/s over a period of 5 seconds.
Step-by-step explanation:
A student asked how to determine the acceleration of a skier who increases their velocity from 5 m/s to 15 m/s over 5 seconds. The formula to calculate acceleration (a) is a = (Δv) / t, where Δv represents the change in velocity and t represents the time it takes for the change. In this case, the change in velocity (Δv) is 15 m/s - 5 m/s, which equals 10 m/s. The time (t) is 5 seconds. Therefore, the acceleration (a) is 10 m/s divided by 5 s, resulting in 2 m/s².