Question

Ответьте пож) лыжник спускался с горы, проходит 50м за 5с.Спустившись с горы и продолжая двигаться,он до полной остановки проходит еще 30 м за 15 с.Найти среднюю скорость лыжника за все время движения

Answer 1

50+30=80(сколько он в общем прееодолел)
80:20=4(вроде так...)

Answer 2

Calculation of Average Speed

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

The skier first travels a distance of 50 meters in 5 seconds. Then, the skier continues moving and covers an additional 30 meters in 15 seconds before coming to a complete stop.

Let's calculate the average speed step by step:

1. Calculate the total distance traveled: - Distance covered in the first part: 50 meters - Distance covered in the second part: 30 meters - Total distance = 50 meters + 30 meters = 80 meters

2. Calculate the total time taken: - Time taken in the first part: 5 seconds - Time taken in the second part: 15 seconds - Total time = 5 seconds + 15 seconds = 20 seconds

3. Calculate the average speed: - Average speed = Total distance / Total time - Average speed = 80 meters / 20 seconds = 4 meters per second

Therefore, the average speed of the skier for the entire duration of the movement is 4 meters per second.

Please note that the sources provided did not contain specific information related to the question. The calculation of average speed is based on the given information and does not require external sources.