Question

З балкона розташованого на висоті 25 м над поверхнею землі, кинули вертикально вгору м'яч зі швидкістю 20 м/с. Визначити через який час м'яч упаде на землю.

Answer 1

T=V/S 20:25=0.8 сек Вот так по формуле легко найти время

Answer 2

Calculation of Time for the Ball to Fall

To determine the time it takes for the ball to fall to the ground, we can use the equations of motion. Since the ball is thrown vertically upwards, we can assume that the only force acting on it is gravity. The acceleration due to gravity is approximately 9.8 m/s^2.

We can use the following equation to calculate the time it takes for the ball to reach its maximum height:

v = u + at

Where: - v is the final velocity (0 m/s at the maximum height), - u is the initial velocity (20 m/s), - a is the acceleration due to gravity (-9.8 m/s^2), - t is the time taken.

Rearranging the equation, we have:

t = (v - u) / a

Substituting the given values, we get:

t = (0 - 20) / -9.8

Simplifying the equation, we find:

t ≈ 2.04 seconds

Therefore, it will take approximately 2.04 seconds for the ball to fall back to the ground.