ONE FORMULA, ONE ANSWER
Friction Stopping Distance Calculator
Calculate sliding stopping distance with constant kinetic friction. Choose input units and calculate one value within the stated conditions.
Inputs
Calculations run in this browser. Scientific notation such as 1.2e-3 is supported. Do not group thousands.
Result
Ideal sliding stopping distance d
Enter values and select Calculate.
d = v₀²/(2μ_k g)
Assumptions
Required: v₀≥0, μ_k,g>0 and sliding on a horizontal surface with constant kinetic friction. Excluded: reaction time, drag, slopes, rotation and vehicle brake control.
Displayed values are floating-point approximations. Design safety factors and unprovided error contributions are not calculated.
Formula references and credits
NaNa Lab created the code, descriptions, icons and preview images. Text, figures and code from the linked references have not been reproduced.
Physical constants: NIST / CODATA 2022. The values of μ₀ and ε₀ are measured recommendations, not exact defining constants. Values and precision notes are in the source record.
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