Question

Um carro anda 160 km em 2 horas.qual sua velocidade media?qual a distancia que ele percorre em 4 horas?se essa velocidade for mantida quanto tempo gastará para percorrer 400km?

Answer 1

Velocidade media :
>>>>>>>>>>>>>>>>>
As = 160km
At = 2horas
Vm = ???


Vm = As / At

Vm = 160km / 2horas

Vm = 80km /h


Distancia percorrida :
>>>>>>>>>>>>>>>>>>
Vm = 80km/h
At = 4horas
As = distancia percorrida

Vm = As / At

80km/h = As / 4h

80km/h x 4h = As

As = 80km/h x 4h

As = 320km


Tempo gastado
>>>>>>>>>>>>>>
dados :
~~~~~~~
As1 = 320km
As2 = 400km
t1 = 4horas
t2 = X

320km_________4seg
400km_________T2

T2 = 400km x 4horas
.........____________
.................320km

T2 = 400 x 4horas
........._________
................320

T2 = 1.600horas
.........._____
............320

T2 = 5horas