I appreciate that you are making an attempt to explain your thinking. It would improve your responses greatly if you could actually quote from Hume to support your point of view, as I have done.
I'm not here criticizing Hume's attack on induction, which has more merit than his attack on cause and effect and deserves a more detailed and nuanced response. I'm just criticizing Hume's attack on Newton's Law of Cause and Effect and his Laws of Motion.
Hume writes:
“There are no ideas which occur in metaphysic
s more obscure and uncertain than those of power, force, energy or necessary connexion, of which it is every moment necessary for us to treat in all our disquisitions. We shall, therefore, endeavor in this section to fix, if possible, the precise meaning of these terms, and thereby remove some part of that obscurity which is so much complained of in this species of philosophy.”
First of all, I disagree with Hume calling this 'metaphysics.' Even during the days of Aristotle, concepts of power, force and energy relate to physics and not metaphysics. Hume refers to 'necessary connexion' because it is impossible to establish cause and effect without a connexion between the two actions or events. This is what makes it necessary.
Hume again writes:
“When we look about us towards external objects, and consider the operations of causes, we are never able, in a single instance, to discover any power or necessary connexion; [that is] any quality which binds the effect to the cause and renders the one an infallible consequence of the other. We only find that the one does actually, in fact, follow the other. The impulse of one billiard ball is attended with motion in the second. This is the whole that attends to the outward senses. The mind feels no sentiment or inward impression from this succession of objects: Consequently, there is not, in any single, particular instance of cause and effect, any thing which can suggest the idea of power or necessary connexion."
Let me state it again. Hume is wrong here. We
are able "in a single instance, to discover any power or necessary connexion... that binds the effect to the cause." Hume's statement is demonstrably false. Once a person has learned the nature and properties of kinetic energy and how the transfer of kinetic energy works, then one can recognize a new instance of that power at work even though they have never seen it in that setting before. A child can learn about the transfer of kinetic energy in school and will immediately recognize that cause and effect on the billiard table. Similarly, if someone has never seen electricity before, with a proper experiment he can immediately grasp that electricity is the cause of the light bulb coming on.
Our understanding of kinetic energy and electricity has nothing to do with human habit. It has to do with understanding how these forces work, the results they cause and the ability to observe this connection.
Hume does not argue that our powers of observation are so poor and untrustworthy that we cannot make observations that are true and reliable. When Hume argues against induction, he is arguing against our ability to infallibly infer the future or past based on what we observe. Hume's attack on cause and effect does not depend on his attack on induction. Rather, Hume's attack on induction depends on his attack on cause and effect.
Hume writes:
“All reasonings on matters of fact seem to be founded on the relation of Cause and Effect. By means of that relation alone we can go beyond the evidence of our memory and senses." Hume,
An Enquiry Concerning Human Understanding, Section iv point 22.
By 'reasonings' Hume includes inferences or inductions. So, clearly, his attack on induction depends on his attack on cause and effect, not the other way around as you suppose.