Velocity-time graphs show velocity on the vertical axis. Acceleration is still represented by the gradient. Key fact The gradient of speed-time and velocity-time graphs represent acceleration.

In terms of velocity and Big Data, it’s easy to fixate on the increased speed in which data is pouring into most organizations today, especially from “firehose” data sources such as social ...

Laser scientists from Lawrence Livermore National Laboratory in California and the University of Rochester in New York have ...

This story appears in the November 2012 issue of National Geographic magazine. Roger Hughes has never seen emperor penguins in the wild. But when he saw them in a BBC documentary, rocketing ...