Question

СРОЧНО! 20 минут осталось на к/р, выручайте Тело массой 1,8 кг подбросили вертикально вверх с начальной скоростью 5,4 м/с. Определи высоту, на которой окажется тело через 0,04 с после броска. (Высоту вырази в сантиметрах!При расчётах прими g= 9,8 м/с².)

Answer 1

Ответ:

210 см

Объяснение:

Answer 2

Calculation of the Height Reached by the Object

To determine the height at which the object will be after 0.04 seconds, we can use the equations of motion. The key equation we will use is:

h = h0 + v0t - (1/2)gt^2

Where: - h is the final height - h0 is the initial height (which we can assume to be zero in this case) - v0 is the initial velocity - t is the time elapsed - g is the acceleration due to gravity

Given the following values: - Mass of the object (m) = 1.8 kg - Initial velocity (v0) = 5.4 m/s - Time elapsed (t) = 0.04 s - Acceleration due to gravity (g) = 9.8 m/s²

We can substitute these values into the equation to calculate the height reached by the object.

h = 0 + (5.4 m/s)(0.04 s) - (1/2)(9.8 m/s²)(0.04 s)^2

Let's calculate this:

h = 0 + (0.216 m) - (1/2)(9.8 m/s²)(0.0016 s²)

h = 0.216 m - 0.0784 m

h = 0.1376 m

To express the height in centimeters, we can convert it by multiplying by 100:

h = 0.1376 m * 100 = 13.76 cm

Therefore, the object will reach a height of 13.76 centimeters after 0.04 seconds.

Please note that the calculation assumes no air resistance and a constant acceleration due to gravity.