It was only a short burn lasting about 16 seconds, but it propelled SS2 beyond the sound barrier to a speed of Mach 1.2.

BBC: Science correspondent, BBC News

The nerves that activate a squid's jet-propelled escape mechanism have particularly big axons, allowing signals to travel at great speed.

ECONOMIST: Andrew Huxley | The

Experiments measured the forces and acceleration of a regulation, adult-size-5 ball propelled repeatedly at a magnesium dummy-like head at 18 meters per second, which is considered the average speed a ball is kicked by nonprofessional players.

WSJ: Soccer 'Header' Impact Likened to Hard Punch