Question

Реши задачу. РАБОТА В ПАРЕ 8 Два велосипедиста одновременно стартовали из пункта А. Пер- вый велосипедист двигался со скоростью 18 км/ч, а второй - со скоростью 21 км/ч. Какое расстояние будет между ними через 3 часа? v1 = 18 км/ч S = ? км t=3ч V2 = 21 км/ч A пж

Answer 1

Ответ:S - расстояние между велосипедистами, V1 и V2 - скорости велосипедистов, t - время движения.

S = 18 км/ч * 3 часа + (21 км/ч - 18 км/ч) * 3 часа = 54 км + 9 км = 63 км

Таким образом, через 3 часа расстояние между велосипедистами будет равно 63 км.

Пошаговое объяснение:

Answer 2

Problem Analysis

We are given that two cyclists start simultaneously from point A. The first cyclist is moving at a speed of 18 km/h, while the second cyclist is moving at a speed of 21 km/h. We need to find the distance between them after 3 hours.

Solution

To find the distance between the two cyclists after 3 hours, we can use the formula:

Distance = Speed × Time

Let's calculate the distance traveled by each cyclist after 3 hours and then find the difference between their distances.

For the first cyclist: - Speed = 18 km/h - Time = 3 hours

Using the formula, we can calculate the distance traveled by the first cyclist:

Distance1 = Speed1 × Time = 18 km/h × 3 hours

For the second cyclist: - Speed = 21 km/h - Time = 3 hours

Using the formula, we can calculate the distance traveled by the second cyclist:

Distance2 = Speed2 × Time = 21 km/h × 3 hours

Finally, we can find the distance between the two cyclists by subtracting the distance traveled by the first cyclist from the distance traveled by the second cyclist:

Distance = Distance2 - Distance1

Let's calculate the values.

Calculation

For the first cyclist: - Speed1 = 18 km/h - Time = 3 hours

Distance1 = Speed1 × Time = 18 km/h × 3 hours = 54 km

For the second cyclist: - Speed2 = 21 km/h - Time = 3 hours

Distance2 = Speed2 × Time = 21 km/h × 3 hours = 63 km

Now, let's find the distance between the two cyclists:

Distance = Distance2 - Distance1 = 63 km - 54 km = 9 km

Answer

The distance between the two cyclists after 3 hours will be 9 km.

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