Question

the graph shows a cyclist’s journey, from home, to the next big city and back. how long was the cyclist stationary during his journey? write the decimal number, space, followed by the unit spelled out in lower case letters.

Explanation:

Step1: Identify stationary intervals

The cyclist is stationary when the distance from home does not change (horizontal line segments). There are two such intervals: from 1.5 to 2 hours (length \(2 - 1.5 = 0.5\) hours) and from 3 to 4 hours (length \(4 - 3 = 1\) hour).

Step2: Sum the stationary durations

Add the two intervals: \(0.5 + 1 = 1.5\) hours.

Answer:

1.5 hours