so in a previous [very long complex post] i explained the reverse rebound reaction [where newtons law of = and opposite reactions also have a secondary reaction. in which the two objects face recoil of a certain amount.] maybe someone couldnt make any fucking sense of that. this will simplify it.
object A [lets say your fist] is swung into a brick wall.
the brick wall [object B] exerts the same amount of force to your fist that you do into it.
your fist is kinetic energy [+K] the brick wall is potential energy [-P] as the wall cannot move.
now if you could calculate the density of your fist, arm, and shoulder and use the formula for [mass times velocity = acceleration] you can get the joules and thus force upon impact [Fi].
now this same formula would be used on the brick wall. calculate its mass and density and then use that formula to calculate Fi.
the wall will have a much greater Fi than your fist and arm. and the walls Fi is potential [since it cannot move on its own will] and thus is a negative force against your positive punching force.
why negative? basically the denser heavier object is the negative as calculating its Fi [force of impact] allows you to find the ACTUAL AMOUNT the reverse rebound effect will take you for.
basically:
+K[the moving object A] moves to strike [Mass times velocity=acceleration] the stationary/moving -P[object B] and the two object have their Fi [force of impact] deducted from each other. and the resulting negative/positive number is the reverse-rebound reaction [Rre] [negative means the moving object faces rebound, positive means it DEALS rebbound].
this can be used to calculate just how much damage an object can do to something once it strikes. such as a car or asteroid; or just a fist hitting a face. many scientists have formulated kinetic and potential energy and newtons laws are fact. but nobody has ever really created a formula that calculates the level of recoil an object will suffer or deal upon striking another object. as far as i know.
to simplfy further, for an object standing still you would first need the impact force of the moving object that will strike it. calculate, then use the same method for the stationary object [say a wall]; however remembering that the wall does not move. as such to calculate the walls Fi you simply calculate the walls speed being the same as [lets say a truck].
for this to work the stationary object must be moving at an equal speed as the truck when doing the calculations. basically a car hitting a wall at 50mph is the same as two cars hitting each other at the same speed. thus the wall [stationary object(s)] MUST ALWAYS be the SAME speed as the object that will strike them when you calculate Rre.
for two seperate moving objects its a little different. just calculate them both as kinetic energy [+K] and find their force of impact [Fi]. then subtract the smaller number from the larger. the result is the Rre that the lesser moving object will face.
now this is a simplified version. obviously both sides will face Rre, but the side with the lesser Fi will face more. and this could theoretically be calculated via a ratio.
for kinetic vs. potential: divide the kinetic Fi by the potential Fi [+KFi/-PFi]
for kinetic vs. kinetic: depends on the perspective. typically youll want to divide the greater potential by the lesser potential [>+P/<+P]. but if you are trying to figure from the perspective of the lesser you would swap them [<+P/>+P].
once you have the ratio you take the Rre at the end and divide it accordingly. its probably not completely accurate, but its proably going to be pretty close. for gods sake someone please try this out and SHOW YOUR WORK.
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