Physics for Scientists and Engineers 3E by R. Knight, C1E&P19

Write a short description of the motion of a real object for which Figure EX1.19 would be a realistic position-versus-time graph.

Figure 1.19 Physics for Scientists and Engineers Third Edition by Randall Knight — Figure EX1.19

Solution:

A forgetful physics professor is walking from one class to the next. Walking at a constant speed, he covers a distance of 100 m in 200 s. He then stops and chats with a student for 200 s. Suddenly, he realizes he is going to be late for his next class, so he hurries on and covers the remaining 200 m in 200 s to get to class on time.