Une voiture parcourt 300 km en 4 heures, puis augmente sa vitesse de 50 % pendant encore 2 heures. Quelle distance la voiture a-t-elle parcourue au total ?

Mon, 04 May 2026 05:02:18 +0000

**Une voiture parcourt 300 km en 4 heures, puis augmente sa vitesse de 50 % pendant encore 2 heures. Quelle distance la voiture a-t-elle parcourue au total ?** In a growing number of conversations online, a simple speed and time scenario is sparking attention: a car travels 300 kilometers in the first 4 hours, then boosts its speed by 50% for the next 2 hours. This dynamic shift in travel behavior raises natural questions about total distance — not just for enthusiasts, but for anyone curious about real-world vehicle efficiency and journey planning. Understanding how variable speeds translate into total kilometers helps travelers, marine planners, and casual users alike make informed decisions. In a continent where road trips and smart mobility shape lifestyle choices, this kind of calculation matters more than ever. ### A Closer Look at Speed Dynamics and Journey Data The scenario begins with a vehicle covering 300 kilometers over 4 hours at a consistent pace. Adding a 50% increase in speed afterward affects future performance but not historical distance — what’s critical is how speed change impacts cumulative travel. The second segment covers 2 hours at 1.5 times the initial speed, meaning the new velocity is 1.5 × (300 km ÷ 4 hr) = 112.5 km/h. Multiplying this new speed by 2 yields 225 kilometers. Total distance combines both phases:
300 + 225 = 525 kilometers — a figure based on clear physics and real-world driving conditions.