Question

Літак і вертоліт летять в одному напрямку швидкість літака 720 км/год , а швидкість вертольота - 300 км/год . Зарас між ними 840 км. Через який час літак наздожене вертоліт?

Answer 1

720-300=420км/ч скорость с которой самоет догоняет вертолет
840/420=2 часа
ответ: через 2 часа

Answer 2

Problem Analysis

We are given the following information: - The speed of the airplane is 720 km/h. - The speed of the helicopter is 300 km/h. - The distance between them is 840 km.

We need to find out how much time it will take for the airplane to catch up to the helicopter.

Solution

To solve this problem, we can use the formula:

Time = Distance / Speed

Let's calculate the time it will take for the airplane to catch up to the helicopter.

The distance between the airplane and the helicopter is 840 km. Since the airplane is moving faster than the helicopter, it will catch up to the helicopter.

The speed of the airplane is 720 km/h, so the time it will take for the airplane to cover the distance of 840 km is:

Time = 840 km / 720 km/h

Calculating this, we get:

Time = 1.1667 hours

Therefore, the airplane will catch up to the helicopter in approximately 1.1667 hours.

Please note that this is an approximate value, as we have rounded the result to four decimal places.

I hope this helps! Let me know if you have any further questions.