'Mach One" refers to the speed of what?

More Questions:

What two pins are left standing in bowling's hardest split to pick up?

What is in the Red Data List?

What is the name of the dog in the musical "Annie"?

Who wrote the 1897 novel "The Invisible Man"?

What author created the character of Tom Tulliver?

Who wrote the essay "A Nice Cup of Tea"?

What duo published the story of "Hansel & Gretel" in 1812?

In which US state is the geographic center of the 48 contiguous states?

What kind of animal was the now extinct Dodo?

What 1970's TV series was revived in 2007 with Michelle Ryan in the title role?

What actress shaved her head for her role in the movie "V for Vendetta"?

Which US president was born in Yorba Linda, California?

In what year was the March of Dimes founded?

Instead of bombs, what did the British Royal Air Force drop on Germany in early WWII?

Who played the Girl on the Motorcycle in the 1968 film of same name?