Answer:
option A
Explanation:
we will converts all the velocity into SI unit then we can tell who is running fast.
a) Emily runs at 15 ft/s
1 ft/s = 0.3048 m/s
15 ft/s = 4.572 m/s
b) Jack runs at 109 ft in 8 s
1 ft = 0.3048 m
109 ft = 33.22 m
speed = 33.22/8 = 4.152 m/s
c) Stephanie runs 1 mile in 467 seconds
1 mile = 1609.34 m
speed = 1609.34/467
v = 3.45 m/s
d) Tony runs 760 feet in 1 minute.
1 ft = 0.3048 m
760 ft = 231.65 m
speed = 231.65/60 = 3.86 m/s
from the above solution Emily runs fastest.
the correct answer is option A
