Who holds a World Land Speed Record and named Daniel Jubb "one of the world's leading rocket scientists"?
Andy Green Wing Commander Andy D. Green OBE (born 30 July 1962) is a British Royal Air Force fighter pilot and World Land Speed Record holder.
Gravity of Earth The gravity of Earth, which is denoted by g , refers to the acceleration that is imparted to objects due to the distribution of mass within the Earth. In SI units this acceleration is measured in metres per second squared (in symbols, m/s or m·s) or equivalently in newtons per kilogram (N/kg or N·kg). Near the Earth's surface, gravitational acceleration is approximately 9.8 m/s, which means that, ignoring the effects of air resistance, the speed of an object falling freely will increase by about 9.8 m per second every second. This quantity is sometimes referred to informally as "little g " (in contrast, the gravitational constant G is referred to as "big G ").