Question

Лыжник, двигаясь под уклоном с горки , проходит 500 м. за 10 секунд. Скатившись с горки и продолжая двигаться, он проходит до полной остановки ещё 600 м. за 1 минуту. Определите среднюю скорость лыжника за всё время движения.Можно не решать а просто минуты в секунды перевести ибо я туплю и не умею...

Answer 1

S=500+600=1100 м
t=10+60=70 c
V=S/t   V=1100/70=15.71 м/с

Answer 2

Calculating the Skier's Average Speed

To calculate the skier's average speed for the entire duration of movement, we can use the formula:

Average Speed = Total Distance / Total Time

First, let's convert the time taken for the skier to cover the distances into a uniform unit (seconds) and then calculate the average speed.

1. Converting Time Units: - The skier covers 500m in 10 seconds and then covers 600m in 1 minute. - Converting 1 minute to seconds: 1 minute = 60 seconds.

2. Calculating Total Distance: - Total Distance = 500m + 600m = 1100m.

3. Calculating Total Time: - Total Time = Time taken to cover 500m + Time taken to cover 600m.

4. Calculating Average Speed: - Average Speed = Total Distance / Total Time.

Let's proceed with the calculations.

Converting Time Units

The skier covers 500m in 10 seconds and 600m in 60 seconds.

Calculating Total Distance

The total distance covered by the skier is 1100m.

Calculating Total Time

The total time taken by the skier is 10 seconds + 60 seconds = 70 seconds.

Calculating Average Speed

Average Speed = 1100m / 70 seconds = 15.71 m/s.

So, the skier's average speed for the entire duration of movement is 15.71 m/s.