Question

Скорость пешеходаx км/ч, велосипедиста y км/ч, скорость сближения, при условии что велосипедист догонит пешехода, скорость удаления, при условии, что велосипедист обгонит пешехода, выражения

Answer 1

Скорость сближения находим так: x+y А скорость удаления так: y-x

Answer 2

Calculation of Speeds and Expressions

To calculate the speed of a pedestrian (x km/h), the speed of a cyclist (y km/h), the speed of approach when the cyclist catches up to the pedestrian, and the speed of separation when the cyclist overtakes the pedestrian, we can use the following expressions:

1. Speed of approach (when the cyclist catches up to the pedestrian): - Speed of approach = x + y.

2. Speed of separation (when the cyclist overtakes the pedestrian): - Speed of separation = y - x.

These expressions allow us to calculate the speeds and the relative motion between the pedestrian and the cyclist.