Key fact The gradient of speed-time and velocity-time graphs represent acceleration. The area under a speed-time graph represents the distance travelled.

Since the horizontal speed doesn't change, the horizontal distance divided by the time gives you the horizontal speed (this doesn't work in the vertical direction).

In terms of the three V’s of Big Data, the volume and variety aspects of Big Data receive the most attention--not velocity. However, successful data-driven companies will combine the speed of ...