Question

Тело за первые 10 мин прошло путь 0.6 км за следующие 5 мин путь равный 900 м.найти среднюю скорость движения на всём пути.

Answer 1

Vср=s1+s2/t1+t2
Vср=0.6+0.9/10+5
Vср=1.5/0.25 (перевели в часы так как км/ч)
Vср=6км/ч

Answer 2

Calculation of Average Speed

To find the average speed of the body over the entire distance, we need to calculate the total time taken and the total distance covered.

Given: - Distance covered in the first 10 minutes = 0.6 km - Distance covered in the next 5 minutes = 900 m

To calculate the total distance covered, we need to convert the distance covered in the next 5 minutes to kilometers: - Distance covered in the next 5 minutes = 900 m = 0.9 km

Now, we can calculate the total distance covered: - Total distance covered = Distance covered in the first 10 minutes + Distance covered in the next 5 minutes - Total distance covered = 0.6 km + 0.9 km - Total distance covered = 1.5 km

To calculate the total time taken, we need to convert the time taken in the next 5 minutes to minutes: - Time taken in the next 5 minutes = 5 minutes

Now, we can calculate the total time taken: - Total time taken = Time taken in the first 10 minutes + Time taken in the next 5 minutes - Total time taken = 10 minutes + 5 minutes - Total time taken = 15 minutes

Finally, we can calculate the average speed: - Average speed = Total distance covered / Total time taken - Average speed = 1.5 km / 15 minutes

The average speed of the body over the entire distance is 0.1 km/minute.