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Part III Cars move from left to right on the section of road shown below. The section of left has 2 lanes; the section of right has 4 lanes. Assumptions: 1. All the cars are identical (i.e., same length), and are equally spaced. 2. All cars move with the same speed on the left section and on the right section, but the speeds on the two section may not be the same 3. All the lanes are fully occupied with cars. The cars enter the left end of the section with speed v. In every time interval, the number of cars entering the left end of the section is equal to the number of cars exiting the right end of the section Question 7. What is the speed of the cars when they exit the right end? O v Other: Question 8. Explain the reasoning you used to answer the previous question.

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