Other objects can cause object to tend to change motion {force, physics}|. Force requires interaction between two objects. All forces are pushes or pulls, such as when two objects collide. Gravity and electric forces are interactions of objects with second-object fields. Force F that object receives equals object mass m times object acceleration a: F = m*a. Force has direction and amount and so is vector. Mechanical force can be interaction between two colliding masses, but repulsions between electrons around molecules mediate contact between objects.
Physical Sciences>Physics>Dynamics>Force
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Date Modified: 2022.0224