The furlong is a unit of length, equal to one-eighth of a mile, which today is most commonly associated with horse racing. The fathom is a unit of length, equal to six feet, which is most commonly associated with measuring the depth of water.

A. The Kentucky Derby is a 10-furlong race. If a horse finishes in exactly two minutes, what is the horse’s average velocity in meters per second? In miles per hour?

B. A fishing supply store sells lines that are 20 fathoms long. How many meters is this?

C. A treasure chest weighs 100 lb_m and is raised to the surface from a depth of 500 fathoms. If gravity is the only force opposing the motion, how much work was required, in Joules?