Question

С противоположных концов ледовой дорожки длиной 850 м одновременно навстречу друг другу стартовали два конькобежца. Скорость одного из них 9 м/с, а скорость другого 8 м/с. Через сколько секунд конькобежцы встретятся?

Answer 1

Скорость сближения: 9+8=17м/с
850:17=50с
Ответ: через 50 сек

Answer 2

9+8=17 м/с это скорость 2 конокобежцев
850÷17=50

Answer 3

Problem Analysis

We are given that two skaters start simultaneously from opposite ends of an 850 m long ice track. The speed of one skater is 9 m/s, and the speed of the other skater is 8 m/s. We need to determine how many seconds it will take for the skaters to meet.

Solution

To solve this problem, we can use the formula: time = distance / speed. Since the skaters are moving towards each other, their combined speed will be the sum of their individual speeds.

Let's calculate the time it takes for the skaters to meet.

Calculation

The distance between the skaters is 850 m. The speed of the first skater is 9 m/s. The speed of the second skater is 8 m/s.

The combined speed of the skaters is 9 m/s + 8 m/s = 17 m/s.

Using the formula time = distance / speed, we can calculate the time it takes for the skaters to meet:

time = 850 m / 17 m/s = 50 seconds.

Therefore, the skaters will meet after 50 seconds.

Answer

The skaters will meet after 50 seconds.