In the docs it says force = mass x acceleration
Where dose the mass and acceleration parts of the equation come from and in what units.
force is in newton( 1 N = 1 kg*m/s^2 ), mass in kg, acceleration in m/s^2
force = mass x acceleration
The mass is specified in the rigidBody, you add the force and the system calculates the acceleration:
acceleration = force / mass
the strength of the force you’re adding is the magnitude of the vector to be precise, and the vector also supplies the direction.