What does the horizontal segment on graph 1 between t=5 and t=10 represent?

Graph 1 shows the cyclist's movement. Between t=5 and t=10, the graph shows a horizontal line segment at a distance of 50 km from point A. A horizontal line on a distance-time graph indicates that the distance from the starting point is not changing. Therefore, the cyclist was stationary during this time interval. This could represent a stop or rest for the cyclist.

Ответ: Велосипедист остановился на 5 часов.