Question

Поезд был задержан в пути на 13 минут, а затем на расстоянии 60 км наверстал потерянное время, увеличив скорость на 10км.ч. Найти первоначальную скорость ОФОРМИТЬ КАК ЗАДАЧУ ПО ФИЗИКЕ

Answer 1

Ответ:

первоначальный скорость 13*60=780

Answer 2

Problem Statement:

A train was delayed by 13 minutes and then made up for the lost time by increasing its speed by 10 km/h over a distance of 60 km. Find the initial speed of the train.

Solution:

To solve this problem, we can use the formula:

Distance = Speed × Time

Let's assume the initial speed of the train is x km/h.

Given that the train was delayed by 13 minutes, we can convert this to hours by dividing it by 60:

Delay time = 13 minutes ÷ 60 = 0.217 hours

The train then traveled a distance of 60 km at a speed increased by 10 km/h. So, the new speed is (x + 10) km/h.

Using the formula, we can set up the following equation:

60 km = (x + 10) km/h × (time + 0.217 hours)

Simplifying the equation, we get:

60 km = (x + 10) km/h × (time + 0.217 hours)

To find the initial speed of the train, we need to solve for x.

Let's solve the equation step by step:

1. Expand the equation:

60 km = (x + 10) km/h × (time + 0.217 hours)

2. Distribute the terms:

60 km = (x + 10) km/h × time + (x + 10) km/h × 0.217 hours

3. Simplify the equation:

60 km = x × time + 10 × time + 0.217x km + 2.17 km

4. Combine like terms:

60 km = x × time + 10 × time + 0.217x km + 2.17 km

5. Rearrange the equation:

60 km - 2.17 km = x × time + 0.217x km + 10 × time

57.83 km = x × time + 0.217x km + 10 × time

6. Factor out x:

57.83 km = x × (time + 0.217 km/h) + 10 × time

7. Substitute the values:

57.83 km = x × (time + 0.217 km/h) + 10 × time

57.83 km = x × (time + 0.217) + 10 × time

8. Since we don't have the exact value of time, we cannot solve for x. We need additional information to find the initial speed of the train.

Therefore, without knowing the exact value of time, we cannot determine the initial speed of the train.