At the end of the test flight,the speed of the Apollo spacecraft was increased to forty thousand kilometers an hour.

VOA: special.2009.07.08

Super-fast Internet connections let people watch movies and send huge amounts of information at the speed of light.

VOA: special.2010.09.01

Some of the tracks were recorded at normal speed and some were recorded at half speed.

VOA: special.2009.09.27

The American buffalo could run at the speed of almost seventy-five kilometers an hour.

VOA: special.2009.02.15

Another popular form of exercise is jogging,or running at a slow to medium speed.

VOA: special.2010.06.08

It dove toward Earth at great speed, spinning rapidly out of control.

VOA: special.2010.07.07

At that speed, the pressure is three times the force of gravity.

VOA: special.2010.07.07

"If you have a fault that is being strained at a speed of 7 mm per year, which is the case here,"

VOA: standard.2010.01.13

At the time of Endeavour's launch, NASA says the International Space Station was traveling at a speed of about eight kilometers-per-second, above western Romania.

VOA: standard.2010.02.08

"When flying low in combat, speed is life. Now,from the left,Captain Smith and Captain Cox return to show center at 300 feet and nearly the speed of sound,".

VOA: standard.2009.11.15