Question 14
The graph shows Clover’s distance from home. She visits a grocery store, goes to the park, retreats in the rain to her grandparents’ house, then cycles to a bookstore and home. Her average speed for the whole trip is 8 km/h. How long does she stay at her grandparents’ house?
Intended model: motion is along one route without detours, horizontal graph segments are stops, and whole-trip average speed includes stops.
Intended model: motion is along one route without detours, horizontal graph segments are stops, and whole-trip average speed includes stops.