This might be my favorite thread.
The short story is this: you are correct, so I’ve updated the book. Thank you. 
The longer story, and the reason why I really like this thread, is because I didn’t realize the difference between speed and acceleration—at least not in the context of Earth’s gravity. I guess I never really gave it much thought, to be honest, but your comment sparked a desire for me to learn more about it.
So, I found a few articles, watched a few videos, and learned something new—and probably something I should have already known, so thank you (again).
P.S. I’m glad you’re enjoying the book.