Question

Первую половину пути автомобиль ехал со скоростью 40 км\ч , а вторую половину пути - со скоростью 60 км\ч. Найдите среднюю скорость автомобиля на протяжении всего пути РЕШЕНИЕ ПИШИТЕ ТОЖЕ

Answer 1

Запомните простую формулу: чтобы найти среднюю скорость нужно разделить весь путь на всё время!!!!
Теперь решаем:
У нас весь путь делится на два участка
Участок 1:
Путь равен S
Время S/40
Участок 2:
Путь равен также S
Время на втором участке S/60
Теперь находим среднюю скорость:
V(cp)=(S+S)/(S/40+S/60)=2S/(3S/120+2S/120)=2S/(5S/120) сокращаем на S
V(cp)=2*120/5=48км/ч
Ответ V(cp)=48км/ч

Answer 2

Calculating Average Speed of a Car

To find the average speed of the car for the entire journey, we can use the formula:

Average Speed = Total Distance / Total Time

Let's calculate the average speed step by step.

1. Calculating Total Distance: - Since the car traveled the first half of the distance at 40 km/h and the second half at 60 km/h, the total distance can be calculated as the sum of the distances traveled at each speed.

- The total distance is equal to the distance traveled at 40 km/h plus the distance traveled at 60 km/h.

- This can be represented as: Total Distance = Distance at 40 km/h + Distance at 60 km/h

2. Calculating Total Time: - The total time can be calculated as the sum of the time taken to cover the first half of the distance and the time taken to cover the second half of the distance.

- This can be represented as: Total Time = Time for first half + Time for second half

3. Calculating Average Speed: - Once we have the total distance and total time, we can use the formula to calculate the average speed.

Let's proceed with the calculations.