If the question here is Suzette late? Then the answer is: First hallway: change in t = change in d / v= 35.0 m / 3.50 m/s = 10.0s
Second hallway: change in t = change in d / v= 48.0 m / 1.20 m/s = 40.0 s
Third hallway: change in t = change in d / v=60.0 m / 5.00 m/s = 12.0s =10.0s + 40.0s + 12.0s = 62.0s This is 2 s after the bell rings so, Suzette is late again for the third time.
