<P> The expression "1 g = 7000980665000000000 ♠ 9.806 65 m / s" means that for every second that elapses, velocity changes 7000980665000000000 ♠ 9.806 65 meters per second (≡ 7000980665000000000 ♠ 35.303 94 km / h). This rate of change in velocity can also be denoted as 7000980665000000000 ♠ 9.806 65 (meter per second) per second, or 7000980665000000000 ♠ 9.806 65 m / s . For example: An acceleration of 1 g equates to a rate of change in velocity of approximately 35 kilometres per hour (22 mph) for each second that elapses . Therefore, if an automobile is capable of braking at 1 g and is traveling at 35 kilometres per hour (22 mph) it can brake to a standstill in one second and the driver will experience a deceleration of 1 g . The automobile traveling at three times this speed, 105 km / h (65 mph), can brake to a standstill in three seconds . </P> <P> In the case of an increase in speed from 0 to v with constant acceleration within a distance of s this acceleration is v / (2s). </P> <P> Preparing an object for g - tolerance (not getting damaged when subjected to a high g - force) is called g - hardening . This may apply to, e.g., instruments in a projectile shot by a gun . </P> <P> Human tolerances depend on the magnitude of the g - force, the length of time it is applied, the direction it acts, the location of application, and the posture of the body . </P>

What is the maximum g force a human can survive