Engineering
Physics Foundation
Circular Motion
Question
The diagram drawn above shows the distance-time graphs of four cars A, B, C and D moving on a levelled road. Choose the correct statement.
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Solution
In a distance-time graph, the slope (steepness) represents speed. A steeper slope means higher speed.
From the graph, the slopes are: Car A (steepest), Car B, Car C, Car D (least steep).
Therefore, the order of speed is: A > B > C > D.
This means Car D is moving slower than Car C, which is the correct statement.
Final Answer: Car D is moving slower than car C.