Chemistry, 18.03.2020 23:26 dyhji

1. a person walks 3 kilometers in an hour, rests for an hour, and then walks 3 more kilometers in another hour. What is the average speed of the person over the three hours?

2. a car travels north for 20 km. The car then travels south for 35 km. If north is taken as the positive direction, what is the displacement of the car?

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1. a person walks 3 kilometers in an hour, rests for an hour, and then walks 3 more kilometers in an...

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