Question

Два мальчика одновременно побежали навстречу друг другу по спортивной дорожке, длина которой 100м. Они встретились через 10с. Первый мальчик бежал со скоростью 4 м/с. С какой скоростью бежал второй мальчик?

Answer 1

100-10=90с    4-90=86с  ответ:86с пробежали

Answer 2

Problem Setup

Two boys are running towards each other on a 100m long track and meet after 10 seconds. The first boy runs at a speed of 4 m/s. We need to find the speed of the second boy.

Calculation

Let's calculate the speed of the second boy using the given information.

The formula to calculate speed is: speed = distance / time

The total distance covered by both boys is 100m, and they meet after 10 seconds. We can use this information to calculate the speed of the second boy.

Using the formula: speed = distance / time

We can calculate the speed of the second boy: speed = 100m / 10s = 10m/s

So, the speed of the second boy is 10 m/s.

Conclusion

The second boy ran with a speed of 10 m/s.