A whale swims due east for a distance of 8.0 km in a time of 2.50 h. It then turns around and moves west for 2.0 km in a time of 0.50 h. It turns around again and heads 4.0 km due east in a time of 1.00 h.

  1. What is the total distance travelled by the whale.
  2. What is the total displacement?
  3. What is the average speed for the entire trip?
  4. What is the average velocity for the entire trip?
  5. There are five quantities discussed in this question: distance, displacement, time, speed, and velocity. Which of these are scalars and which are vectors?
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