Question

С одного и того же края катка одновременно побежали в одном направлении 2 мальчика со скоростью 9 м/с и 6 м/с. Через сколько секунд один из них окажется на 150 м впереди другого?

Answer 1

Найдем скорость отдаления.

1) 9-6=3(м/с) V отдаления

Воспользуемся формулой S:V=t.

2)150:3=50(с)

Ответ: через 50 секунд мальчики окажутся на расстоянии 150 м

Answer 2

Problem Analysis

Two boys are running in the same direction from the same starting point on a skating rink. The first boy has a speed of 9 m/s, while the second boy has a speed of 6 m/s. We need to determine how many seconds it will take for one of them to be 150 m ahead of the other.

Solution

To solve this problem, we can set up an equation based on the relative speed of the two boys. The relative speed is the difference between their speeds, which in this case is 9 m/s - 6 m/s = 3 m/s. We can use this relative speed to calculate the time it takes for one boy to be 150 m ahead of the other.

Let's assume that the first boy is ahead of the second boy. We can set up the equation as follows:

Distance = Relative Speed × Time

In this case, the distance is 150 m and the relative speed is 3 m/s. We need to solve for time.

150 m = 3 m/s × Time

To find the time, we can rearrange the equation:

Time = Distance / Relative Speed

Substituting the values, we get:

Time = 150 m / 3 m/s = 50 seconds

Therefore, it will take 50 seconds for one of the boys to be 150 m ahead of the other.

Answer

One of the boys will be 150 m ahead of the other after 50 seconds.