F

Force Calculator

Newton’s second law: find the force, the mass or the acceleration from the other two.

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Result…

Solve for
kg
m/s²

Free fall on Earth is 9.81 m/s².

 

…

How it's calculated

F = m × a
m = F ÷ a
a = F ÷ m

Force is mass times acceleration, measured in newtons (kg·m/s²). Use the net force: if friction or drag pushes back, the acceleration comes from what is left over. Weight is the same law with a = g, so a 1 kg mass weighs about 9.81 N on Earth.

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