1.   A bullet exceeding the speed of sound creates two shock waves.

2.   A chariot moves at the speed of the creatures pulling it.

3.   A pea-sized projectile is hurtled into a target at speeds of up to sixteen thousand miles an hour.

4.   A second technique that greatly improves the speed of searching a sequential file is to use a logarithmic search.

5.   Apart from the Novelty value of this, there is the advantage of speed of execution.

6.   At room temperature, atoms normally fly around at speeds of hundreds or thousands of miles per hour.

7.   Beat well at medium speed of the electric mixer.

8.   But this means that data transfer between processor registers is slowed down to the speed of store access.

9.   Cold dark-matter particles move slowly - hot ones move at nearly the speed of light.

10.   Efficiency could be measured in terms of speed of performance, the least amount of storage required or the least number of program lines.