Force Calculator
Solve force, mass, or acceleration using F = m × a.
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How force, mass, and acceleration are calculated
This force calculator uses Newton’s second law to solve force, mass, or acceleration. It is useful for physics class, motion analysis, mechanics concepts, collision estimates, and basic engineering practice.
Use consistent units. Mass is usually in kilograms, acceleration in m/s², and force in newtons. Real situations with friction, slopes, air resistance, or multiple directions can be more complex.
Formula or logic
- Force F = Mass m × Acceleration a
- Mass m = Force F ÷ Acceleration a
- Acceleration a = Force F ÷ Mass m
Example
If a 10 kg object accelerates at 2 m/s², the net force is 20 N. This force is the net force, not necessarily one single applied force.
Common questions
What force does F = ma mean?
It means net force, the combined effect of all forces causing acceleration.
Are weight and mass the same?
No. Mass measures inertia, while weight is the gravitational force on that mass.
Can acceleration be negative?
Yes. A negative sign usually means the direction is opposite to the chosen positive direction.