Acceleration from Velocity Change
a = (v_f − v_i) / t. Average acceleration from initial + final velocity over time.
Result
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How to use this calculator
- Enter v_i, v_f, t.
- Read acceleration in m/s² and g.
About this calculator
Average acceleration is the rate of change of velocity over time. Sports car 0-60 mph in 5 s: 60 mph = 26.8 m/s, so a = 26.8/5 = 5.4 m/s² ≈ 0.55 g. Earth's gravity: 9.81 m/s² = 1 g. Human pilots can sustain 5-9 g for short periods. Indy car corners pull 3-5 g lateral.
Frequently asked
Average vs. instantaneous?+
This calc gives average. Instantaneous a = dv/dt — needs calculus or a tachometer (changing reading).
Negative acceleration?+
Deceleration. v_f < v_i gives negative a — slowing down.
g-force comparisons?+
Casual driver: 0.2-0.4 g. Sports car launch: 0.6-1.0 g. Roller coaster: 3-5 g. Space shuttle launch: 3 g sustained.
How to convert mph to m/s?+
Divide by 2.237. 60 mph = 26.82 m/s. 100 km/h = 27.78 m/s.
Linear vs. centripetal?+
Linear: along direction of motion. Centripetal: perpendicular (toward center) on a curve. Both can act simultaneously.
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