Question

Велосепидист за первые 10 мин. проехал 3 км, а за следующие 5 мин. - 1.2 км. С какой средней скоростью двигался велосепедист. НАПИШИТЕ ТОЛЬКО ОТВЕТ

Answer 1

270м/сек.
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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.

The cyclist traveled 3 km in the first 10 minutes and 1.2 km in the next 5 minutes.

To find the total distance, we add the distances traveled in the two time intervals: 3 km + 1.2 km = 4.2 km.

To find the total time, we add the durations of the two time intervals: 10 minutes + 5 minutes = 15 minutes.

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

Average Speed = Total Distance / Total Time

Substituting the values, we get:

Average Speed = 4.2 km / 15 minutes

To convert the average speed to a more common unit, we can convert minutes to hours. Since there are 60 minutes in an hour, we divide the total time by 60:

Average Speed = 4.2 km / (15 minutes / 60 minutes per hour) = 4.2 km / 0.25 hours

Now, we can calculate the average speed:

Average Speed = 4.2 km / 0.25 hours = 16.8 km/h

Therefore, the cyclist was moving at an average speed of 16.8 km/h.