A turtle takes 3.5 minutes to walk 18 m toward the south along a deserted highway. A truck driver stops and picks up the turtle. The driver takes the turtle to a town 1.1 km to the north with an average speed of 12 m/s. What is the magnitude of the average velocity of the turtle for its entire journey?

Question

Quizplus · Accepted Answer

The total displacement is 1082 m north (1100 m - 18 m). The total time is 3.5 minutes (210 seconds) + 91.67 seconds (1100 m / 12 m/s). The average velocity is 1082 m / 301.67 s ≈ 3.6 m/s.

A Turtle Takes 3