Question

Из одного пункта в другой мотоциклист двигался со скоростью 60 км\ч обратный путь им был пройден со скоростью 10м\с определите среднюю скорость мотоциклиста за все время движения

Answer 1

10м\с = 36км\ч
(60+36)\2 = 48км\ч - средняя скорость.
Ответ: 48км\ч.

Answer 2

Calculation of Average Speed

To calculate the average speed of the motorcyclist for the entire journey, we need to find the total distance traveled and the total time taken.

The motorcyclist traveled from one point to another at a speed of 60 km/h. The return journey was completed at a speed of 10 m/s.

To calculate the total distance, we need to convert the speed of the return journey from meters per second to kilometers per hour.

1 meter per second is equal to 3.6 kilometers per hour. Therefore, the speed of the return journey is 10 m/s * 3.6 km/h = 36 km/h.

Now, we can calculate the total distance traveled by adding the distance of the forward journey and the distance of the return journey.

Let's assume the distance of the forward journey is 'd' kilometers.

The time taken for the forward journey can be calculated using the formula: time = distance / speed.

Therefore, the time taken for the forward journey is d km / 60 km/h = d/60 hours.

The time taken for the return journey can be calculated using the formula: time = distance / speed.

Therefore, the time taken for the return journey is d km / 36 km/h = d/36 hours.

The total time taken for the entire journey is the sum of the time taken for the forward journey and the time taken for the return journey.

Therefore, the total time taken is (d/60) + (d/36) hours.

The average speed can be calculated using the formula: average speed = total distance / total time.

Therefore, the average speed of the motorcyclist for the entire journey is d + d / ((d/60) + (d/36)) km/h.

Simplifying the expression, we get:

Average speed = (d + d) / ((d/60) + (d/36)) km/h.

Average speed = (2d) / ((d/60) + (d/36)) km/h.

Now, we can substitute the given values to find the average speed.

Let's assume the distance of the forward journey is 1 kilometer for simplicity.

Substituting the values, we get:

Average speed = (2 * 1) / ((1/60) + (1/36)) km/h.

Simplifying the expression, we get:

Average speed = 2 / (1/60 + 1/36) km/h.

Average speed = 2 / (0.0167 + 0.0278) km/h.

Average speed = 2 / 0.0445 km/h.

Average speed ≈ 44.94 km/h.

Therefore, the average speed of the motorcyclist for the entire journey is approximately 44.94 km/h.

Please note that the above calculation assumes a distance of 1 kilometer for the forward journey. The actual average speed will depend on the distance traveled.