Question

Ответ поподробнее если несложно На расстоянии 200 м охотничья собака заметила зайца. Через сколько времени она догонит его, если заяц убегает со скоростью 36 км/ч, а собака догоняет его со скоростью 54 км/ч

Answer 1

s=200м   v1=36/3.6=10м/с   v2=54/3.6=15 м/с   t=?

относительная скорость vo=v2-v1

t=s/vo=s/(v2-v1)=200/(15-10)=40 c

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Answer 2

Calculation of Time to Catch the Hare

To calculate the time it takes for the hunting dog to catch the hare, we need to determine the distance between them and compare their speeds.

Given: - Distance between the dog and the hare: 200 m - Hare's speed: 36 km/h - Dog's speed: 54 km/h

To calculate the time it takes for the dog to catch the hare, we can use the formula:

Time = Distance / Speed

Let's plug in the values and calculate the time:

Time = 200 m / (54 km/h - 36 km/h)

Converting the speeds to meters per second (m/s) for consistency:

- Hare's speed: 36 km/h = 36,000 m / 3,600 s = 10 m/s - Dog's speed: 54 km/h = 54,000 m / 3,600 s = 15 m/s

Time = 200 m / (15 m/s - 10 m/s)

Simplifying the equation:

Time = 200 m / 5 m/s

Time = 40 seconds

Therefore, it will take the hunting dog approximately 40 seconds to catch the hare.