Question

В колодец глубиной 300 метров мальчик бросает 2 камня, второй камень на 1 секунду позже первого, какое расстояние пролетит второй камень, когда мальчик услышит всплеск воды от удара первого. Скорость звука=330м/с

Answer 1

Дано: S=300 метров

Vзвука=330м/с

Найти t2-? S2-?

Решение: S=gt^2/2

2S/g=t^2 => t^2=60 => t1= под корнем 60 сек

t3=300/330=30/33=0,909=0,9сек

t=t1+t3=0,9+7,75=8,655=8,66cek

S2=10*t2^2/2=10*7,66^2/2=293,378=293метров

Answer 2

Problem Analysis

A boy throws two stones into a well that is 300 meters deep. The second stone is thrown 1 second after the first stone. We need to calculate the distance traveled by the second stone when the boy hears the splash of the first stone hitting the water. The speed of sound is given as 330 m/s.

Solution

To solve this problem, we need to calculate the time it takes for the sound of the splash to reach the boy's ears. We can then use this time to calculate the distance traveled by the second stone.

Let's break down the solution into steps:

1. Calculate the time it takes for the sound to reach the boy's ears. 2. Calculate the distance traveled by the second stone.

Step 1: Calculate the time it takes for the sound to reach the boy's ears

The time it takes for the sound to reach the boy's ears can be calculated using the formula:

time = distance / speed

In this case, the distance is equal to the depth of the well, which is 300 meters, and the speed of sound is given as 330 m/s.

Substituting the values into the formula, we get:

time = 300 / 330

Calculating this, we find that the time it takes for the sound to reach the boy's ears is approximately 0.909 seconds.

Step 2: Calculate the distance traveled by the second stone

Since the second stone is thrown 1 second after the first stone, we need to calculate the distance traveled by the second stone in 0.909 seconds.

To calculate the distance traveled by an object in a given time, we can use the formula:

distance = speed * time

In this case, the speed of the second stone is the same as the speed of the first stone, which is not given. Therefore, we cannot calculate the exact distance traveled by the second stone without knowing the initial speed of the stones.

Without additional information, we cannot provide a specific answer to the question. However, we can provide a general formula to calculate the distance traveled by the second stone in terms of the initial speed of the stones.

Let's denote the initial speed of the stones as v. The distance traveled by the second stone can be calculated using the formula:

distance = v * (time - 1)

Where time is the time it takes for the sound to reach the boy's ears, which we calculated as approximately 0.909 seconds.

Therefore, the distance traveled by the second stone can be calculated as v * (0.909 - 1).

Please note that without knowing the initial speed of the stones, we cannot provide a specific numerical answer to the question. However, we have provided a general formula that can be used to calculate the distance traveled by the second stone once the initial speed of the stones is known.

I hope this helps! Let me know if you have any further questions.