Question

what two aspects of a force do scientists measure?
position and size
magnitude and direction
size and stability
strength and magnitude

Explanation:

A force is a vector quantity. Vector quantities have both magnitude (size or amount) and direction. For example, when we push an object, we need to know how hard we push (magnitude) and in which direction we push. Position is related to the location of an object, not a property of force. Stability is not a characteristic of force. Strength is similar in meaning to magnitude but not the correct term when considering the two - aspect nature (magnitude and direction) of a force as a vector.

Answer:

magnitude and direction