To analyze the test drive and determine the type of motion during each portion of the test, we can examine the distances covered, the times taken, and the directions of travel.
Given Data:
- 0 s: 0 km, East
- 60 s: 2 km, East
- 120 s: 4 km, East
- 180 s: 6 km, North
Portion of the Test Analysis:
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From 0 s to 60 s:
- Distance change: From 0 km to 2 km in 60 seconds.
- Direction: East (no change).
- Since the driver moves from rest to 2 km, this indicates a change in speed (speeding up).
- Motion Evidence: Accelerated.
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From 60 s to 120 s:
- Distance change: From 2 km to 4 km in 60 seconds.
- Direction: East (no change).
- The distance is the same (2 km) over the same time period (60 seconds), indicating a constant speed.
- Motion Evidence: Non-accelerated.
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From 120 s to 180 s:
- Distance change: From 4 km to 6 km in 60 seconds.
- Direction: Change from East to North.
- Although the distance continues to increase, the change in direction indicates a change in velocity (since velocity has both speed and direction).
- Motion Evidence: Accelerated (change in direction).
Summary Table:
| Portion of the Test | Type of Motion Evidence | |---------------------------|----------------------------| | From 0 s to 60 s | Accelerated | | From 60 s to 120 s | Non-accelerated | | From 120 s to 180 s | Accelerated |
This table indicates when the professional driver was accelerating based on changes in speed or direction during the test drive.
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