The Flying Circus of Physics

The Flying Circus of Physics by Jearl Walker (1975, published by John Wiley and Sons; "with Answers" in 1976; second edition in 2006), is a book that poses (and answers) about a thousand questions concerned with everyday physics. The emphasis is strongly on phenomena that might be encountered in one's daily life.
From the preface: "if you start thinking about physics when you are cooking, flying, or just lazing next to a stream, then I will feel the book was worthwhile".
Typically, the questions posed by the book are about phenomena that many readers will have encountered, but not thought through physically. For example: