Which statement is a scientifically accurate description of velocity?


1. The boat traveled from the dock north to the 200-meter marker in the bay in less than 5 minutes, giving the passengers several more hours to fish.


2. Walking south along the two-mile canyon trail generally takes less time than traveling the same trail north because walking south is all downhill.


3. The hiker began hiking the park's five-mile north hiking trail at 8:00 a.m. with plenty of daylight left to complete the hike before dark.


4. The motorcyclist traveled along a highway at 55 mph and reached the campsite in less than the two-hour estimated time.