Question

Камень брошен с высоты 28м вертикально вниз с начальной скоростью 8 м/с.Найдите скорость падения камня на землю,определите вид движения тела

Answer 1

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Answer 2

Calculating the Speed of the Falling Stone

To calculate the speed of the falling stone when it reaches the ground, we can use the following formula:

v = √(u^2 + 2gh)

Where: - v = final velocity - u = initial velocity - g = acceleration due to gravity - h = height

Given: - Initial velocity (u) = 8 m/s - Height (h) = 28 m - Acceleration due to gravity (g) = 9.8 m/s^2

Substituting these values into the formula:

v = √(8^2 + 2 * 9.8 * 28)

v ≈ 34.3 m/s

Determining the Type of Motion

The type of motion of the falling stone can be determined based on its velocity and acceleration. Since the stone is dropped from a height and is only under the influence of gravity, its motion can be classified as uniformly accelerated motion.

This means that the stone's velocity increases uniformly as it falls, and its acceleration remains constant at approximately 9.8 m/s^2.

Therefore, the stone undergoes uniformly accelerated motion as it falls to the ground.

This information should help you understand the speed of the falling stone and the type of motion it exhibits. If you have any further questions or need additional assistance, feel free to ask!