The most fundamental form of Newton's 2nd Law is:
. If an object of mass M has an acceleration , the net force acting on that object is equal to Ma.
. If an object A exerts a force F on an object B, object B will exert a force of the same magnitude but of opposite direction (-F) on object A.
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C). If a constant force F acts on an object over a time At, the average acceleration of that object during this time is FAt.
The net force acting on an object is equal to the time rate of change of that object's linear momentum.