Speed

In everyday use and in kinematics, the speed of an object is the magnitude of its velocity (the rate of change of its position); it is thus a scalar quantity. The average speed of an object in an interval of time is the distance travelled by the object divided by the duration of the interval; the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero.

Like velocity, speed has the dimensions of a length divided by a time; the SI unit of speed is the metre per second, but the most common unit of speed in everyday usage is the kilometre per hour or, in the US and the UK, miles per hour. For air and marine travel the knot is commonly used.

The fastest possible speed at which energy or information can travel, according to special relativity, is the speed of light in a vacuum c = 7008299792458000000♠299792458 metres per second (approximately 7008299722222222222♠1079000000 km/h or 7008299963840000000♠671000000 mph). Matter cannot quite reach the speed of light, as this would require an infinite amount of energy. In relativity physics, the concept of rapidity replaces the classical idea of speed.

Slow (Rumer song)

"Slow" is a song by British female singer-songwriter Rumer. It is the first single released from her debut album Seasons of My Soul; it reached #16 on the UK Singles Chart and #33 on the Irish Singles Chart. The song was record of the week on BBC Radio 2 and Smooth FM. A music video was made for the song and was added to YouTube on 28 July 2010. The video was shot in a recording studio.

Track listings

Chart performance

"Slow" debuted on the UK Singles Chart at number 16 on 15 September 2010, in its second week it dropped to number 31 and dropped out of the Top 40 in its third week. The single also peaked to number 33 on the Irish Singles Chart.

Release history

References

External links

Slow (Kylie Minogue song)

"Slow" is a song recorded by Australian singer Kylie Minogue for her ninth studio album Body Language (2003). It was released as the lead single from the album by Parlophone on 3 November 2003. The song was written by Minogue, Dan Carey, Emilíana Torrini, and produced by Carey, Torrini, and Sunnyroads. "Slow" is a synthpop song in which Minogue invites a man to "slow down" and dance with her.

Upon its release, "Slow" was acclaimed by music critics, many of whom praised Minogue's sensual and seductive vocals. At the 47th Grammy Awards ceremony, the song received a nomination in the category of "Best Dance Recording". Commercially, the song was a success and peaked at number one on the charts of countries like Australia, Denmark, Spain and the United Kingdom. The song also reached number one on the Billboard Hot Dance Club Songs in the United States. In Australia, the song was certified platinum by the Australian Recording Industry Association (ARIA) for sales of 70,000 units.