Question

7. Тело свободно падает с высоты 10 м. Какова скорость тела на высоте 6 м над землей? Какова скорость воды на поверхности?​

Answer 1

Ответ:

ответ на фото

Объяснение:

Answer 2

Calculation of the Body's Velocity at 6m Above the Ground

To calculate the velocity of the body at a height of 6m above the ground, we can use the principles of free fall. When an object is freely falling, its velocity increases due to the acceleration of gravity until it reaches terminal velocity or hits the ground.

In this case, the body is freely falling from a height of 10m. We can use the equation for the final velocity of an object in free fall:

v^2 = u^2 + 2as

Where: - v is the final velocity - u is the initial velocity (which is 0 in this case) - a is the acceleration due to gravity (approximately 9.8 m/s^2) - s is the displacement or change in height (10m - 6m = 4m)

Plugging in the values, we get:

v^2 = 0 + 2 * 9.8 * 4

Simplifying the equation:

v^2 = 78.4

Taking the square root of both sides:

v = √78.4

Calculating the square root:

v ≈ 8.85 m/s

Therefore, the velocity of the body at a height of 6m above the ground is approximately 8.85 m/s.

Calculation of the Water's Velocity at the Surface

To calculate the velocity of the water at the surface, we need more information. The velocity of water at the surface can vary depending on factors such as the flow rate, depth, and other environmental conditions.

Please provide additional details or specify the context in which you would like to calculate the water's velocity at the surface, so I can assist you further.