Question

Автобус, рухаючись зі швидкістю 60 , подолав відстань від одного селища до іншого за 0,5 год. На зворотний шлях він витратив 1,5 год. Визначте середню швидкість руху автобуса на всьому шляху.​

Answer 1

Автобус, двигаясь со скоростью 60 км/ч , преодолел расстояние от одного поселка до другого за 0,5 часа. На обратный путь он потратил 1,5 часа. Определите среднюю скорость движения автобуса на всем пути.

Vср=Vобщ/количествоV

В данном случае:

Vср= V1+V2/2

S=Vt=60×0,5=30 км

V=S/t= 30/1,5=20 км/ч

Vср= 60+20/2=40 км/ч

Answer 2

Calculating the Average Speed of the Bus

To calculate the average speed of the bus for the entire journey, we can use the formula:

Average Speed = Total Distance / Total Time

First, let's determine the total distance traveled by the bus for the entire journey.

The bus traveled from one settlement to another in 0.5 hours and then returned in 1.5 hours. This means the total time for the entire journey is 0.5 hours (one way) + 1.5 hours (return) = 2 hours.

Now, we need to find the total distance traveled by the bus. Since the distance is the same for both the forward and return journeys, we can use the time and speed relationship formula:

Distance = Speed × Time

Given that the bus traveled at a speed of 60 km/h, we can calculate the total distance for the entire journey.

Calculating Total Distance

Using the formula Distance = Speed × Time: - Distance for the forward journey = 60 km/h × 0.5 h = 30 km - Distance for the return journey = 60 km/h × 1.5 h = 90 km

The total distance for the entire journey is 30 km (one way) + 90 km (return) = 120 km.

Now that we have the total distance and total time, we can calculate the average speed of the bus for the entire journey.

Calculating Average Speed

Using the formula Average Speed = Total Distance / Total Time: - Average Speed = 120 km / 2 h = 60 km/h

Therefore, the average speed of the bus for the entire journey is 60 km/h.