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Current Attempt in Progress An 18-year-old runner can complete a 10.0-km course with an average speed of 4.55 m/s. A 50-year-old runner can cover the

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Current Attempt in Progress An 18-year-old runner can complete a 10.0-km course with an average speed of 4.55 m/s. A 50-year-old runner can cover the same distance with an average speed of 4.11 m/s. How much later (in seconds) should the younger runner start in order to finish the course at the same time as the older runner? Number i Units

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