The acceleration g value refers to the unit of gravity acceleration, and how long it takes to reach the speed of 0- 100 kilometers per hour. The shorter the time, the greater the G value, which is about 10 meter per second, including lateral acceleration (to measure cornering maneuverability and ride comfort) and positive acceleration (an important indicator of dynamic performance).

In the automobile acceleration performance test, the average acceleration g is obtained by dividing the average acceleration measured in an acceleration interval by the gravity acceleration g, and the deceleration g is100 km/h-how long it takes to complete the complete braking, and the smaller the time, the greater the g value, which is related to the gravity of the earth.

For example, in the 0- 100km/h acceleration performance test of a certain car, the measured acceleration time is 6.2s, and its average acceleration =27.78/6.2=4.48m/s2, showing that the average acceleration G value =4.48/9.8≈0.46, that is, 0.46g. There will be horizontal and vertical data when testing the car.

For ordinary cars, the maximum and minimum can be achieved in the vertical direction, but in the horizontal direction, ordinary people can rarely do it except professional drivers because of the danger of out-of-control vehicles. When I was in junior high school physics, I said this physical quantity. Strictly speaking, it should actually be represented by G. The acceleration of an object falling near the ground due to the gravity of the earth in a vacuum is recorded as G.