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Answer:
To answer the questions:
A) The maximum speed of the car can be determined by looking at the highest point on the speed-time graph. In this case, the maximum speed is 15 m/s.
B) The initial acceleration of the car can be calculated by finding the slope of the speed-time graph at the beginning of the journey. The initial acceleration is the rate at which the speed of the car is changing at the start of the journey. This can be determined by calculating the change in speed over the change in time within the first few seconds of the journey.
Since the speed at the start of the journey is 0 m/s and the speed after a few seconds is 9 m/s, the initial acceleration can be calculated as follows:
Initial acceleration = (Final Speed - Initial Speed) / Time
Initial acceleration = (9 m/s - 0 m/s) / (time taken to reach 9 m/s)
Therefore, the initial acceleration of the car can be calculated using the given data.