Question

Тело свободно падает с высоты 40м. сколько времени длится полёт тела до падения на землю? Какое расстояние пролетело тело за первые 2с падения? ​

Answer 1

Ответ:Путь равен: начальная скорость умножить на время, плюс ускорение умножить на время в квадрате, делить на два - S=Vo*t+(a*t^2)/2. Так как тело движется только под силой тяжести, то a (ускорение) = g (ускорению свободного падения) = 10м/с^2 Vo = 0.

S=(g*t^2)/2

t^2=2*S/g

t^2=2*45/10=9c t=3

V=Vo+at =>V=gt

V=10*3=30 м/с

Объяснение:

Answer 2

Ответ:

Смотря какая масса ну а так за 5 секунд. 15-20 метров

Answer 3

Calculation of Time of Flight

To calculate the time of flight of an object freely falling from a height of 40m, we can use the equation for the time of flight of an object in free fall:

Time of Flight (t) = sqrt((2 * height) / g)

where: - height is the initial height from which the object is dropped (40m in this case) - g is the acceleration due to gravity (approximately 9.8 m/s^2)

Let's substitute the values into the equation:

Time of Flight (t) = sqrt((2 * 40) / 9.8)

Calculating this equation gives us the time of flight of the object.

Calculation of Distance Traveled in the First 2 Seconds

To calculate the distance traveled by the object in the first 2 seconds of its fall, we can use the equation for the distance traveled by an object in free fall:

Distance Traveled (d) = (1/2) * g * t^2

where: - g is the acceleration due to gravity (approximately 9.8 m/s^2) - t is the time interval (2 seconds in this case)

Let's substitute the values into the equation:

Distance Traveled (d) = (1/2) * 9.8 * (2^2)

Calculating this equation gives us the distance traveled by the object in the first 2 seconds of its fall.

Calculation Results

Using the above equations, we can calculate the following:

- The time of flight of the object is approximately 2.02 seconds. - The distance traveled by the object in the first 2 seconds of its fall is approximately 19.6 meters.

Please note that these calculations assume no air resistance and a constant acceleration due to gravity.