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Solve the all parts of given question:

Question: An automobile travels on a straight road for 19 km at 23 km/h. It then continues in the same direction for another 19 km at 46 km/h.

Part A: What is the average velocity (in km/h) of the car during this 38 km trip? (Assume that it moves in the positive x direction.)

Part B: What is the average speed (in km/h)?

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