Lesson 9 - Answers to Suggested Problems
After you have had a chance to try the suggested
end-of-chapter conceptual questions, problems and exercises,
you can check your answers against mine below. (Please alert
Jason Harlow jharlow@physics.utoronto.ca if you notice any
errors in the answers.)
Conceptual
Question [These start on page 122]
19. Yes. If the speed of the softball
relative to the thrower is the same as the speed of the
truck relative to the road. The motion would appear
parabolic to the thrower.
Problems and Exercises [These start on page 125]
53. (a) 4 m/s (b) 7.7 min (c) with no wind
the round trip would have taken 22 minutes, but with the
wind it takes 27.7 minutes.
56. 17.0 m/s, 22.2 degrees above the horizontal
62. 6.68 m/s, 53.3 degrees south of west [Here is a
suggested set-up for this
problem.]
