Question

Из улья вылетела пчела и полетела со скоростью 8 м/с.Через 30 с всед за ней вылетела вторая пчела и полетела со скоростью 9/с. Через какое время вторая пчела догонит первую?

Answer 1

1) 8*30=240 (м) - пролетит 1-я пчела до вылета 2-ой

2) 9-8=1 (м/с) - скорость сближения

3) 240:1 = 240 (с) = 4 (мин.)

Ответ: через 4 мин. вторая пчела догонит первую

Answer 2

9-8=1 м/с скорость сближения

8*30=240 м было между пчелами на момент вылета 2-й

240/1=240 сек 

через 240 сек вторая догонит первую

Answer 3

Calculating the Time for the Second Bee to Catch Up

To calculate the time it takes for the second bee to catch up with the first bee, we can use the formula:

time = distance / relative speed

The relative speed is the difference in speeds between the two bees.

The first bee's speed is 8 m/s, and the second bee's speed is 9 m/s.

The first bee has been flying for 30 seconds before the second bee starts.

Let's calculate the distance the first bee has covered in 30 seconds.

Calculating the Distance Covered by the First Bee

The distance covered by the first bee in 30 seconds can be calculated using the formula:

distance = speed * time

Substituting the values: distance = 8 m/s * 30 s

distance = 240 m

So, the first bee has covered a distance of 240 meters in 30 seconds.

Calculating the Time for the Second Bee to Catch Up

Now, we can calculate the time it takes for the second bee to catch up with the first bee.

The relative speed between the two bees is 9 m/s - 8 m/s = 1 m/s.

Using the formula: time = distance / relative speed

Substituting the values: time = 240 m / 1 m/s

time = 240 seconds

Therefore, the second bee will catch up with the first bee after 240 seconds.