Question

Автомобиль движется со скоростью 80 км/ч, а самолет - 900 км/ч. Во сколько раз скорость каждого из них меньше первой космической скорости?​

Answer 1

Ответ:

Va = 80 км/ч ≈ 22,2 м/с;

Vc = 900 км/ч = 250 м/с.

V1 = √(GM/R);

V1 = 7,9 * 10³ м/с.

(7,9 * 10³)/(22,2) ≈ 356;

(7,9 * 10³)/(250) ≈ 31,6.

Ответ: скорость автомобиля в 356 раз меньше первой космической скорости, а скорость самолёта — в 31,6 раз.

Объяснение:

Answer 2

Calculation of Speed Ratios

To determine the ratio of the speed of each vehicle to the first cosmic speed, we need to calculate the first cosmic speed and then compare it to the speeds of the car and the airplane.

The first cosmic speed, also known as the escape velocity, is the minimum speed required for an object to escape the gravitational pull of a celestial body. On Earth, the first cosmic speed is approximately 40,270 km/h.

Given that the car is moving at a speed of 80 km/h and the airplane is moving at a speed of 900 km/h, we can calculate the ratios as follows:

Car Speed Ratio: The ratio of the car's speed to the first cosmic speed is calculated by dividing the car's speed by the first cosmic speed: 80 km/h / 40,270 km/h = 0.001987

Airplane Speed Ratio: The ratio of the airplane's speed to the first cosmic speed is calculated by dividing the airplane's speed by the first cosmic speed: 900 km/h / 40,270 km/h = 0.02234

Therefore, the car's speed is approximately 0.001987 times the first cosmic speed, and the airplane's speed is approximately 0.02234 times the first cosmic speed.

Please note that these calculations are approximate and may vary depending on the specific values used for the first cosmic speed.

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