8. Um automóvel percorre uma estrada com função horária s = – 80 + 80.t, onde s é dado em km e t em horas. O automóvel passa pelo km zero após:stion *
a) 1,0 h.
b) 1,5 h.
c) 0,5 h.
d) 2,0 h.
e) 2,5 h.

a) t = 1.0h

Explanation:

You have the following equation for the position of a car:

To find the value of the time t, in which the car position is zero km you equal s to zero, and then you calculate the time t:

hence, the time in which the position of the car is at s=0 km is t = 1.0h

a) 1.0 h

hey , the answer is c

i believe the answer would be:

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