Question

A group of motorcyclists took a 4.0-hour trip south to Rosarito. During the first 3.0 hours, they traveled a total of 50 kilometers, but during the last hour, they traveled only 10.0 kilometers. What was the group’s average velocity for the entire trip?

Answer 1

The group's average velocity for the entire 4.0-hour trip to Rosarito, where they traveled 50 km in the first 3 hours and 10 km in the last hour, is 15 km/h.

Step-by-step explanation:

The group's average velocity for the entire trip to Rosarito can be calculated by finding the total displacement over the total time of the trip. The displacement is equal to the distance traveled going in one direction. First, we add the distance traveled in the first 3 hours to the distance traveled in the last hour: 50 km + 10 km = 60 km. Next, we divide the total displacement by the total time of the trip: 60 km / 4.0 hours = 15 km/h. Therefore, the group's average velocity for the entire trip is 15 km/h.