*Obtener los 3 segundos en Ax 70.35:

Ax= Vo(At) + 1/2 a(At)^2

70.35=(20)At + 1/2 (2.3)At^2

70.35= 20At + 1.15At^2

1.15 At^2 + 20 At - 70.35

a b c

x= 6.9/ 2.3 = 3 segundos

*AHORA CON 73.5.

Ax= Vo (At) + 1/2 a (At)^2

73.5= (20)At + 1.15 At^2

1.15 At^2 + 20At - 73.5= 0

a b c

X= 3.11 segundos