A car travels at a constant speed of 60 km/h for 2.5 hours, then accelerates to 90 km/h for another 1.5 hours. What is the total distance the car travels?
["Title: How Distance is Calculated: A Real-World Car Journey from 60 km/h to 90 km/h", "Traveling by car involves constant speed calculations, especially when journeys include variable speeds. In this article, we explore a practical scenario: a car traveling at a steady speed of 60 km/h for 2.5 hours, then accelerating to 90 km/h for another 1.5 hours. Understanding how to compute total distance traveled helps with route planning, time estimation, and vehicle performance analysis. Let’s break down the journey step by step.", "### Step 1: Calculate Distance at Constant Speed", "The first phase of the journey sees the car moving at a consistent speed of 60 km/h for a duration of 2.5 hours.", "Distance formula:\n[\n\ ext{Distance} = \ ext{Speed} \ imes \ ext{Time}\n]", "Substituting the known values:\n[\n\ ext{Distance}_1 = 60\ \ ext{km/h} \ imes 2.5\ \ ext{hours} = 150\ \ ext{km}\n]", "So, the car travels 150 kilometers during the first leg.", "### Step 2: Calculate Distance After Acceleration", "Next, the car accelerates and maintains a higher speed of 90 km/h for 1.5 hours.", "Using the same formula:\n[\n\ ext{Distance}_2 = 90\ \ ext{km/h} \ imes 1.5\ \ ext{hours} = 135\ \ ext{km}\n]", "Thus, the car covers an additional 135 kilometers in the second phase.", "### Step 3: Total Distance Traveled", "To find the total journey distance, simply add both segments:\n[\n\ ext{Total Distance} = \ ext{Distance}_1 + \ ext{Distance}_2 = 150\ \ ext{km} + 135\ \ ext{km} = 285\ \ ext{km}\n]", "### Conclusion", "This example demonstrates how simple distance calculations apply to real driving conditions. Whether commuting, planning long trips, or analyzing vehicle performance, knowing how to compute distance from speed and time is essential. In this specific journey—going 60 km/h for 2.5 hours and then 90 km/h for 1.5 hours—the car travels a total of 285 kilometers. Understanding these principles helps drivers maximize efficiency, estimate arrival times, and appreciate the dynamics of motion on the road.", "---", "Keywords: car distance calculation, constant speed travel, 60 km/h to 90 km/h, total distance journey, velocity and time formula, road trip distance, driving speed analysis"]
