A doctor leaves her house and wallks along the sidewalk towards the hospital. After 3mins, it starts to rain and finds shelter before returning home. Her distance from her house as a function of time is show in the figure below. At what moment in time is her velocity constant and negative? 250 200 10 tmin) O t. 1min O t. Smin t= 4min O t 7min

A doctor leaves her house and wallks along the sidewalk towards the hospital. After 3mins, it starts to rain and finds shelter before returning home. Her distance from her house as a function of time is show in the figure below. At what moment in time is her velocity constant and negative? 250 200 10 tmin) O t. 1min O t. Smin t= 4min O t 7min

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