Question

Из одного пункта в другой мотоциклист двигался со скоростью 60км/ч , обратный путь он проехал со скоростью 10м/с. Определите среднею скорость мотоциклиста за все время движения. Умный народ, помоги.......

Answer 1

Calculation of Average Speed

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

Let's assume the distance between the two points is D.

The motorcyclist traveled from one point to another with a speed of 60 km/h, which is equivalent to 16.67 m/s (since 1 km/h = 0.2778 m/s). The time taken for this part of the journey can be calculated using the formula:

Time = Distance / Speed

For the first part of the journey, the time taken is:

Time1 = D / 16.67 m/s

On the return journey, the motorcyclist traveled with a speed of 10 m/s. The time taken for this part of the journey can be calculated using the same formula:

Time2 = D / 10 m/s

To find the total time taken for the entire journey, we can add the times for the two parts:

Total Time = Time1 + Time2

Finally, we can calculate the average speed using the formula:

Average Speed = Total Distance / Total Time

Let's calculate the average speed using these formulas.