Respuestas

2013-12-04T18:16:01+01:00
1 milla = 1 609,344 metros

DATOS:
v = distancia total / tiempo total
t = 2'30" = 5/2h = 150min  = 9000s
d = 1200 mill = 1931212.8m

RESOLUCIÓN:
v = 1200/(5/2)
v = 2400/5
v = 480 mill/h

v = 1931212.8/9000
v = 214.58 m/s