Answer:
150 seconds
Step-by-step explanation:
To carry out this exercise we first have to know the equivalence between miles-feet and hours-seconds.
1 mile = 5280 feet
1 hour = 3600 seconds
now with that information we can pass miles per hour to feet per second
15 mi/h = 15 * 5280 f / 3600 s
15 mi/h = 22 ft/s
we know that the speed is 22 ft/s, and the distance is 3300 ft, using the formula v = d / t
v = velocity = 22 ft/s
d = distance = 3300 ft
t = time = ?
v = d / t
t = d / v
t = 3300 ft / 22 ft/s
t = 150 s
it will take 150 seconds to travel the length of track