Physics
posted by Natasha .
An 18yearold runner can complete a 10.0km course with an average speed of 4.39 m/s. A 50yearold runner can cover the same distance with an average speed of 4.27 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?

You must be in my physics class lol
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