Question

Велосипедист и пешеход движутся в противоположных направлениях. Скорость велосипедиста 15км/ч, а пешехода-5км/ч. Сколько км будет между ними через 1 час? 3ч?

Answer 1

1) 15+5=20(км/ч)-Общая скорость велосипедиста и пешехода вместе.
2) 20х1=20(км)-через 1 час.
3) 20х3=60(км)
Ответ:60км между ними будет через 3 часа

Answer 2

Calculation of Distance between the Cyclist and Pedestrian

To calculate the distance between the cyclist and the pedestrian, we can use the formula:

Distance = Speed x Time

Let's calculate the distance between them after 1 hour and 3 hours.

1. After 1 hour: - The speed of the cyclist is 15 km/h. - The speed of the pedestrian is 5 km/h.

Using the formula, we can calculate the distance:

Distance = Speed x Time

For the cyclist: Distance = 15 km/h x 1 hour = 15 km

For the pedestrian: Distance = 5 km/h x 1 hour = 5 km

Therefore, after 1 hour, the distance between the cyclist and the pedestrian is 15 km.

2. After 3 hours: - The speed of the cyclist is 15 km/h. - The speed of the pedestrian is 5 km/h.

Using the formula, we can calculate the distance:

Distance = Speed x Time

For the cyclist: Distance = 15 km/h x 3 hours = 45 km

For the pedestrian: Distance = 5 km/h x 3 hours = 15 km

Therefore, after 3 hours, the distance between the cyclist and the pedestrian is 45 km.

Please note that these calculations assume that both the cyclist and the pedestrian maintain a constant speed throughout the given time period.