Question

За перші 3 хвилини руху тіло подолало шлях 1,8 км, а в наступні 20 с воно рухалося зі швидкістю 10 м/с. Обчисліть середню швидкість руху тіла. Срочно надо! ​

Answer 1

Ответ:

за формулою l:t

10м/с за 20 с = 200 м

отже - l = 0,2+1,8 = 2км

180с+20с=200с

отримуємо: V= 2000÷200=10

10м/с

Answer 2

To calculate the average speed of an object, we need to divide the total distance traveled by the total time taken. In this case, the body traveled a distance of 1.8 km in the first 3 minutes and then continued to move at a speed of 10 m/s for the next 20 seconds.

Let's calculate the average speed step by step:

1. Convert the distance traveled in the first 3 minutes to meters: - 1.8 km = 1.8 * 1000 = 1800 meters

2. Convert the time taken in the first 3 minutes to seconds: - 3 minutes = 3 * 60 = 180 seconds

3. Calculate the distance traveled in the next 20 seconds: - Speed = 10 m/s - Distance = Speed * Time = 10 * 20 = 200 meters

4. Calculate the total distance traveled: - Total distance = Distance in the first 3 minutes + Distance in the next 20 seconds = 1800 + 200 = 2000 meters

5. Calculate the total time taken: - Total time = Time in the first 3 minutes + Time in the next 20 seconds = 180 + 20 = 200 seconds

6. Calculate the average speed: - Average speed = Total distance / Total time = 2000 / 200 = 10 m/s

Therefore, the average speed of the body is 10 m/s.

Please let me know if there's anything else I can help you with!