Question

Камень брошеный вниз пролетает в первую секунду 4 целых 9 10х м а в каждую следующую секунду на 9 целых 8 10х м больше чем в предыдущую найди глубину если брошеный в него камень летит до дна в течение 3 секунды

Answer 1

4,9+9,8= 14,7 во вторую секунду
14,7+9,8=24,5 в третью
4.9+14.7+24.5=44.1 за три секунды

Answer 2

Calculation of the Depth of a Stone Thrown Downwards

To calculate the depth of a stone thrown downwards, we need to consider the distance covered by the stone in each second. According to the given information, the stone covers 4.9 + (9.8 * (n-1)) meters in the n-th second, where n represents the number of seconds.

Let's calculate the distance covered by the stone in each second:

- In the first second, the stone covers 4.9 meters. - In the second second, the stone covers 4.9 + (9.8 * (2-1)) = 14.7 meters. - In the third second, the stone covers 4.9 + (9.8 * (3-1)) = 24.5 meters.

Now, let's calculate the total distance covered by the stone in 3 seconds:

- Total distance covered = 4.9 + 14.7 + 24.5 = 44.1 meters.

Therefore, the depth of the stone when it reaches the bottom after 3 seconds is 44.1 meters.

Please note that the calculations are based on the given information and may not account for other factors such as air resistance.