Swimmer Eric Shanteau placed third in the 200-meter breaststroke at the U.S. Olympic trials with a time of 2:10.05. This gives him an average speed of 1.538 m/s. Of course, this wasn’t his speed the ...

A journey describes the motion of an object over time. A journey can be represented using a distance-time graph. The graph will show when an object is moving and when it is stationary. The graph can ...

Marcus du Sautoy presents a problem about his imagined commute to work. He can travel 10mph on the way there, and 15mph on the way back. The distance is fixed, so the question is, what is his average ...

Turn your Android phone into a speedometer to track current speed, average speed, and get 0-60 mph time and quarter-mile time. Ed Rhee Ed Rhee, a freelance writer based in the San Francisco Bay Area, ...