Question

Автомобили выехали из пунктов а и в навстречу друг другу. Расстояние между а и в 108км . Первый автомобиль движется со скоростью 10 м/с. Встреча произошла через 1 час. Какова скорость второго автомобиля? Пожалуйста с рисунком

Answer 1

S=(V1+V2)*t
V2=S-V1*t/t=108-36*1/1=72 км/ч=20 м/с

Answer 2

Problem Analysis

We are given that two cars, A and B, start from points A and B respectively and move towards each other. The distance between points A and B is 108 km. The first car, A, is moving with a speed of 10 m/s. We are asked to find the speed of the second car, B, when they meet after 1 hour.

Solution

To find the speed of the second car, B, we can use the formula:

Speed = Distance / Time

Let's calculate the time it takes for the two cars to meet. We are given that the first car, A, is moving with a speed of 10 m/s and they meet after 1 hour. Therefore, the distance traveled by car A is:

Distance_A = Speed_A * Time = 10 m/s * 1 hour = 10 m/s * 3600 s = 36000 m

Since the two cars are moving towards each other, the total distance traveled by both cars is equal to the distance between points A and B, which is 108 km or 108,000 m.

Distance_A + Distance_B = 108,000 m

We can rearrange this equation to solve for the distance traveled by car B:

Distance_B = 108,000 m - Distance_A = 108,000 m - 36,000 m = 72,000 m

Now, we can calculate the speed of car B using the formula:

Speed_B = Distance_B / Time

We are given that the time is 1 hour, which is equal to 3600 seconds. Therefore:

Speed_B = 72,000 m / 3600 s = 20 m/s

So, the speed of the second car, B, is 20 m/s.

Diagram

Here is a diagram to illustrate the situation:

      A ---------------------- B
      |<--- 36,000 m --->|

Please note that the diagram is not to scale.

I hope this helps! Let me know if you have any further questions.