Question

Две ласточки вылетили одновременно на встречу друг дружке со скоростью 23 м/с, через сколько секунд они встретятся если расстояние между ними 920м

Answer 1

10скорость сближения

23+23=46 м/с

2)через сколько встретятся?

920:46=20 с

Answer 2

Problem Analysis

We are given that two swallows are flying towards each other with a speed of 23 m/s. We need to determine how many seconds it will take for them to meet, given that the distance between them is 920 m.

Solution

To solve this problem, we can use the formula: time = distance / relative speed.

The relative speed is the sum of the speeds of the two swallows, as they are flying towards each other. In this case, the relative speed is 23 m/s + 23 m/s = 46 m/s.

Substituting the values into the formula, we get: time = 920 m / 46 m/s = 20 seconds.

Therefore, it will take 20 seconds for the two swallows to meet.

Answer

The two swallows will meet after 20 seconds.

Verification

Let's verify the answer using the given information.

The distance between the two swallows is 920 m, and their combined speed is 23 m/s + 23 m/s = 46 m/s.

If we calculate the time it takes for them to meet using the formula time = distance / relative speed, we get: time = 920 m / 46 m/s = 20 seconds.

Therefore, the answer is verified to be correct.