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s=
u=40kmh-1 (11,11ms-1)
v=90kmh-1 (25ms-1)
a=
t=20min (1200s)
Sabemos que:
a=(v-u)/t
a=(25-11,11)/1200
a=0,011575ms-²
Buscamos la distancia:
s=(v+u/2)t
s=(25+11,11/2)1200
s=21666m
Durante esos 20 minutos, que son 1/3 horas, habrá recorrido: