O Bus Rapid Transport (BRT) é um transporte articulado que opera em linhas exclusivas na cidade do Rio de Janeiro. O sistema tem objetivo de melhorar a mobilidade da cidade. O gráfico abaico apresenta o comportamento da velocidade de um articulado entre duas estações consecutivas. Não houve parada entre as mesmas. >Se uma pessoa decidisse percorrer a distância entre duas estações mantendo uma velocidade constante de 6Km/h, o trajeto seria completado em: (A) 25 minutos.
(B) 37 minutos.
(C) 48 minutos.
(D) 54 minutos.
(E) 65 minutos.

t = 50 min  

so no answer is correct, the closest is C

Explanation:

In this exercise we must start by finding the distance between the stations using the graph,

let's divide the work into 3 parts

part 1 with relate constant

           v₁ = v₀ + a₁ t₁

from the graph we see that it starts with zero velocity v₀ = 0

           a₁ = v₁ / t₁

To have all the magnitudes in the same units, let's reduce the time to hours

            t₁ = 1 min (1 h / 60 min) = 0.0166 h

           a₁ = 50 / 0.01666

           a₁ = 3000 km / h²

now let's find the distance traveled

            x₁ = v₀ t₁ + ½ a₁ t₁²

            x₁ = 0 + ½ 3000 (1/60)²

            x₁ = 0.41666 km

Part 2 with constant velocity

            v₁ = x₂ / t₂

            t₂ = 5-1 = 4 min

            t₂ = 4/60 h

            x₂ = v₁ t₂

            x₂ = 50 (4/60)

            x₂ = 3.33333 km

Part 3 braking to a stop

             v = v₁ + a₃ t₃

final velocity is zero v = 0

           t₃ = 8-5 = 3 min

           t₃ = 3/60 = 1/20 h

           t₃ = 0.05 s

           a₃ = v₁ / t₃

           a₃ = 50 / 0.05

           a₃ = 1000 km / h₂

            x₃ = v₁ t - ½ a₃ t₃³

            x₃ = 50 0.05 - ½ 1000 0.05²

            x₃ = 1.25 km

the total distance between the two stations is

             x_total = x₁ + x₂ + x₃

             x_total = 0.416666 + 3.33333 + 1.25

             x_toal = 4.999999 km

Taking the distance between the stations, we can calculate the time it takes man to travel them

             v_man = x_total / t

              t = x_total / v_man

              t = 4.999999 / 6

              t = 0.833332 h

              t = 49.99999 min

              t = 50 min

the time it takes is 50 min, so no answer is correct, the closest is C

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.