During a performance test of an experimental hyperloop capsule, a research team aims to evaluate its propulsion efficiency. The capsule completes two consecutive straight runs, each over a distance of 1.80 km. The overall average speed achieved across both runs combined is 840 km h-1.
The average speed of the capsule during the first run was 210 m s-1.
Calculate, in s\text{s}s, the time taken for the capsule to complete the second run. Give your answer to 3 significant figures.
