![]() The resulting unit will depend on the units for both time and distance, so if your input was in miles and hours, the acceleration will be in miles/h 2. Where a is the acceleration, v 0 is the starting velocity, v 1 is the final velocity, and t is the time (acceleration duration or t 1 - t 0). The formula for acceleration expressed in terms of the initial velocity (speed), final velocity and the acceleration duration (time) is: Negative g-force is much harder to handle, with the limit being between -2g and -3g. A typical person can handle 5g for a short duration without passing out, while trained pilots with suits and other equipment can withstand 9g for prolonged periods of time. However, the human body deals much worse with vertical g-forces that are aligned with the spine. If perpendicular, many humans can endure 20g for about 10 seconds, 10g for a minute, and 6g for up to 10 minutes, without any ill effects. The human body can handle a different amount of g-force depending on whether it is perpendicular to or along the spine. ![]() The value of ɡ n is a nominal midrange value on Earth, originally based on the acceleration of a body in free fall at sea level at a geodetic latitude of 45°, the actual acceleration of free fall on Earth varies according to location. G n is equal to 9.80665 m/s 2 and is the standard acceleration due to Earth's gravity according to the International Service of Weights and Measures. It can be used to estimate the deceleration required to come to a full stop in a given number of seconds, for example, or the breaking path of a vehicle decelerating at a given rate. The calculator can be used to calculate deceleration as well, simply by entering a lower value for the final speed. km/h 2), meters per second squared (m/s 2) and standard gravity units ( g n, often just g). The output is always in the input unit squared (e.g. You need to know 3 of the 4: acceleration, initial speed, final speed and time (acceleration duration) to calculate the fourth. due to the many different units supported. ![]() This acceleration calculator is useful for any kind of vehicle or object: car, bus, train, bike, motorcycle, plane, ship, space craft, projectile, etc. Equations for initial velocity, final velocity, and time.
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