Question

за первые 20 сек велосипедист проехал 160 метров, а следующие 40 сек он двигался со скоростью 6,5 метров в секунду. какова средняя скорость велосипедиста на всем пути? ​

Answer 1

Ответ:

Пошаговое объяснение:

Найдём первую скорость

V= 160:20=8м/с

Второе расстояние S=40*6,5=260м

Средняя скорость

V=(8+6,5):2=7, 25м/с

Answer 2

Calculation of Average Speed

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

Given: - The cyclist traveled 160 meters in the first 20 seconds. - The cyclist traveled at a speed of 6.5 meters per second for the next 40 seconds.

To find the total distance traveled, we add the distance covered in the first 20 seconds to the distance covered in the next 40 seconds: 160 meters + (6.5 meters/second * 40 seconds) = 160 meters + 260 meters = 420 meters.

To find the total time taken, we add the time taken in the first 20 seconds to the time taken in the next 40 seconds: 20 seconds + 40 seconds = 60 seconds.

Now, we can calculate the average speed by dividing the total distance traveled by the total time taken: Average speed = Total distance / Total time = 420 meters / 60 seconds = 7 meters per second.

Therefore, the average speed of the cyclist for the entire journey is 7 meters per second.

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