Question

Сергей прошел за 40 мин 500м, спустя ещё 35 мин он прошел 200 м. С какой средней скоростью двигался Сергей?

Answer 1

Ответ:

средняя скорость пешехода Vср=360м/час

Объяснение:

путь s1=500m,  t1=40мин,  | применим ф-лу Vср=s1t1+s2t2/t1+t2=

       s2=200m,  t2=35мин, |     =0.5км*0.666ч+0.2км*0.583ч./1.249=0.36км/ч,

время 40мин представим в часах как 40/60=0.666ч,

35мин.⇒35/60=0.583ч

Answer 2

Calculation of Average Speed

To calculate the average speed at which Sergey was moving, we need to determine the total distance he covered and the total time it took him.

From the given information, Sergey first covered a distance of 500 meters in 40 minutes. Then, after an additional 35 minutes, he covered another 200 meters.

To calculate the total distance, we add the two distances together: 500 meters + 200 meters = 700 meters.

To calculate the total time, we add the two time intervals together: 40 minutes + 35 minutes = 75 minutes.

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

Average Speed = Total Distance / Total Time

Substituting the values we found, we get:

Average Speed = 700 meters / 75 minutes

To convert the average speed to a more common unit, we can convert minutes to hours. There are 60 minutes in an hour, so:

Average Speed = 700 meters / (75 minutes / 60 minutes per hour)

Simplifying the equation:

Average Speed = 700 meters / (1.25 hours)

Finally, we can calculate the average speed:

Average Speed = 560 meters per hour

Therefore, Sergey was moving at an average speed of 560 meters per hour.