# g-Acceleration Calculator - Linear Motion

Calculation of the g-force at accelerating or braking in a straight line motion. 1 g is the average gravitational acceleration on Earth, the average force, which affects a resting person at sea level.
0 g is the value at zero gravity. 1 g = 9.80665 m/s² = 32.17405 ft/s². To reach this value at a linear acceleration, you must accelerate from 0 to 60 mph in 2.74 seconds. When braking, the start speed is higher than the end speed, the g-value will become negative.

Enter three values at start speed, end speed, time and acceleration. The fourth value will be calculated.

There is also an acceleration, when moving with a constant speed in a curve.

Example: if you accelerate from 0 to 100 kilometers per hour with half a g, it takes a little less than 6 seconds.

One g is what we as living beings on earth are used to. We would still notice the acceleration in the example above because, on the one hand, it does not act downwards but forwards and, on the other hand, the earth's gravity is still there. A hypothetical interstellar spacecraft accelerating at one g could simulate a normal gravitational force for its occupants during that acceleration. It would take 4245.5 hours to reach half the speed of light, which is a little less than half a year. Then it would take about 8 years to get to the next star, during which there is weightlessness, and then it would have to slow down again for half a year. Such spaceships are still far beyond our capabilities.

In the long term, accelerations of over 1 g are dangerous to our health; we are simply not made for that. At 0 g, i.e. in weightlessness, you need less muscle strength and therefore the muscles degenerate. For a very short time and with luck, 100 g can be survived.

German: g-Beschleunigung