Question: Concern hybrid cars such as the Toyota Prius that are powered by a gas-engine, electric-motor combination, but can also function in Electric-Vehicle (EV) only mode, without power from the engine. Figure shows the velocity, v, of a 2010 Prius Plug-in Hybrid Prototype operating in normal hybrid mode and EV-only mode, respectively, while accelerating from a stoplight.
About how far, in feet, does the 2010 Prius Prototype travel in EV-only mode during the first 15 seconds of movement?