A car travels at a speed of 80 km/h and a truck travels at 60 km/h in the same direction. How far apart will they be after 2 hours if they start together?
Practice Questions
1 question
Q1
A car travels at a speed of 80 km/h and a truck travels at 60 km/h in the same direction. How far apart will they be after 2 hours if they start together?
20 km
40 km
60 km
80 km
Relative speed = 80 - 60 = 20 km/h. Distance = speed * time = 20 * 2 = 40 km.
Questions & Step-by-step Solutions
1 item
Q
Q: A car travels at a speed of 80 km/h and a truck travels at 60 km/h in the same direction. How far apart will they be after 2 hours if they start together?
Solution: Relative speed = 80 - 60 = 20 km/h. Distance = speed * time = 20 * 2 = 40 km.
Steps: 7
Step 1: Identify the speed of the car, which is 80 km/h.
Step 2: Identify the speed of the truck, which is 60 km/h.
Step 3: Since both vehicles are traveling in the same direction, calculate the relative speed by subtracting the truck's speed from the car's speed: 80 km/h - 60 km/h = 20 km/h.
Step 4: Determine the time they travel, which is 2 hours.
Step 5: Use the formula for distance, which is distance = speed * time. Here, the speed is the relative speed (20 km/h) and the time is 2 hours.
Step 6: Calculate the distance: 20 km/h * 2 hours = 40 km.
Step 7: Conclude that after 2 hours, the car and truck will be 40 km apart.
