Heya!!
For calculate velocity, lets applicate formula
[tex]\boxed{d = v * t}[/tex]
Δ Being Δ
d = Distance = 3790 m
t = Time = 249 s
v = Velocity = ?
⇒ Let's replace according the formula and clear "v":
[tex]\boxed{v= 3790\ m / 249\ s}[/tex]
⇒ Resolving
[tex]\boxed{ v = 15,22 \ m/s }[/tex]
Result:
The velocity is 15,22 meters per second.
Good Luck!!