v = \frac{d}{t}\) \(v = 400 \div 1.2\) \(v = 333~m/s \ (3 \ sf)\) The accepted value for the speed of sound in air is 330 m/s. However, this experimental method is flawed as humans do not use stop ...

A prototype of a passenger jet designed to succeed the supersonic Concorde broke the sound barrier for the first time on ...

A person fires a starting pistol. A distant observer stood 200 metres away (measured using a 20 m tape measure or trundle wheel) records the time between seeing the flash of light from the ...