Answer
The car stays at a constant speed of 90 km/h. The car's velocity is not constant because the car changes direction.
Work Step by Step
This is discussed on page 43.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.