Question

Відстань між двома пристанями дорівнює 16 км. Від цих пристаней одночасно в одному напрямку вирушили два моторних човни. один із них рухався по переду зі швикістю 14 км/год, а другий - 18 км/год. через скільки годин після початку руху другий човен наздоженене пергший?

Answer 1

1) 18-14=4 (км/ч) - скорость сближения

2) 16:4=4 (часа)

Ответ: через 4  через  годины після початку руху другий човен наздоженене пергший.

Answer 2

Distance and Speed Problem

To solve this problem, we can use the formula:

time = distance / speed

First, let's calculate the time it takes for the second boat to catch up to the first boat.

Calculating Time to Catch Up

The first boat's speed is 14 km/h, and the second boat's speed is 18 km/h. The distance between the two piers is 16 km.

The time it takes for the second boat to catch up to the first boat can be calculated using the formula:

time = distance / relative speed

The relative speed is the difference between the speeds of the two boats.

Let's calculate the time it takes for the second boat to catch up to the first boat.

Calculation

For the first boat: - Speed = 14 km/h - Time = distance / speed = 16 km / 14 km/h

For the second boat: - Speed = 18 km/h - Time = distance / speed = 16 km / 18 km/h

Now, let's compare the times for both boats and find out when the second boat catches up to the first boat.

Conclusion

The second boat catches up to the first boat after a certain amount of time, which can be calculated using the above method.