Answer:
"Pierre drives a car at constant speed on a stretch of straight highway. It travels 450 m for a duration equal to 9500 ms. Then, at the same speed, he tackles a turn in an arc. 1. Calculate Pierre's speed in: a) The frame of reference related to the car. B) The road-related frame of reference. 2. What is Pierre's trajectory in the frame of reference linked to the road? 3. Deduce the nature of Pierre's movement in this same frame of reference."