Question

Мотоциклист, двигавшийся со скоростью 15 м/с на прямом участке дороги, заметил, что стоящий у дороги старик ударился о рельс, через 3 секунды раздался звук удара. Мотоциклист обогнал мужчину через 69 секунд после столкновения. Определить скорость распространения звука в воздухе.СРОЧНО!!!! дам 30 очков​

Answer 1

Объяснение:

Надеюсь что правильно,

Answer 2

Calculation of the Speed of Sound

To determine the speed of sound in the air, we can use the information provided in the question. Let's break down the given information:

- The motorcyclist was traveling at a speed of 15 m/s on a straight road. - The motorcyclist noticed that an old man standing by the road hit the rails. - The sound of the impact was heard 3 seconds later. - The motorcyclist overtook the man 69 seconds after the collision.

To calculate the speed of sound, we need to consider the time it took for the sound to reach the motorcyclist. Since the motorcyclist overtook the man 69 seconds after the collision, we can subtract this time from the time it took for the sound to reach the motorcyclist.

Let's calculate the time it took for the sound to reach the motorcyclist:

Time taken for the sound to reach the motorcyclist = Time of collision + Time for sound to reach the motorcyclist

The time of collision is given as 3 seconds. Therefore:

Time taken for the sound to reach the motorcyclist = 3 seconds + Time for sound to reach the motorcyclist

Now, we can calculate the time for sound to reach the motorcyclist:

Time for sound to reach the motorcyclist = Total time - Time taken for the motorcyclist to overtake the man

Total time = Time of collision + Time for sound to reach the motorcyclist + Time taken for the motorcyclist to overtake the man

Total time = 3 seconds + Time for sound to reach the motorcyclist + 69 seconds

Since the motorcyclist overtook the man 69 seconds after the collision, the total time is 69 seconds.

Now, we can substitute the values into the equation:

69 seconds = 3 seconds + Time for sound to reach the motorcyclist + 69 seconds

Simplifying the equation:

Time for sound to reach the motorcyclist = 0 seconds

This means that the sound reached the motorcyclist instantaneously. Therefore, the speed of sound in the air is infinite.

Please note that the result obtained here is based on the information provided in the question. If there are any additional details or factors that need to be considered, please let me know.