Final answer:
The displacement of the car with a constant velocity of 20 m/s over 30 seconds is calculated as 600 meters, which is the product of the velocity and time interval.
Step-by-step explanation:
When analyzing the motion of a car using a velocity vs. time graph, we can determine the displacement by looking at the area under the velocity-time graph between two points in time. In the student's scenario, the car has a constant speed of 20 m/s for a duration of 30 seconds. To calculate the displacement, we will use the formula:
- Displacement = Velocity × Time
Substituting the given values, we get:
- Displacement = 20 m/s × 30 s
- = 600 m
Therefore, the car's displacement between t = 0s and t = 30 s is 600 meters.