What formula is used?

F = m × a (force = mass × acceleration).

Use consistent units (e.g. kg and m/s² → N; g and cm/s² → dyne).

Can mass or acceleration be zero?

They can be; F would then be zero. Only division-by-zero is avoided elsewhere.

Calculate force from mass and acceleration: F = ma (Newton's second law).

Mass (m)

Acceleration (a)

What formula is used?: F = m × a (force = mass × acceleration).
What units?: Use consistent units (e.g. kg and m/s² → N; g and cm/s² → dyne).
Can mass or acceleration be zero?: They can be; F would then be zero. Only division-by-zero is avoided elsewhere.

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