Question: A person can run by accelerating and decelerating with maximum absolute acceleration a. What is the minimum time this person will need to start from

A person can run by accelerating and decelerating with maximum absolute acceleration a. What is the minimum time this person will need to start from zero initial speed to reach the wall located at a distance L from him, turn around and run to the initial point? At the wall, his speed should be zero (so as not to hit the wall)

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