During a one-hour trip, a small boat travels 80.0 km north and then travels 60.0 km east.
-What is the magnitude of the boat's average velocity for the one-hour trip?
A)20 km/h
B)100 km/h
C)140 km/h
D)10 000 km/h
E)20 000 km/h

Question

Quizplus · Accepted Answer

The boat's average velocity is the total displacement divided by the total time. The displacement is the straight-line distance from the starting point to the ending point, which can be found using the Pythagorean theorem: √(80^2 + 60^2) = 100 km. Since the trip takes one hour, the average velocity is 100 km/h.

During a One-Hour Trip, a Small Boat Travels 80