my friend it's real simple; as the 2 won't be effected by the limit, so only part affected by limit is x^2 when x->1
although u are write it might go to 2.999 when it approach from left, but u need to consider another fact when limit approach from right than it will be 3.00001 that's...
i tink u mis understood the conservation of linear momentum. it says whenever u one object having mass m and velocity v collide with another then the momentum of that body will be the same mv. if its heavier then it will have less velocity and if its lighter then it will have more velocity.
i think gravity is a force just like an electric field which have it's own area or a region where it's effective and it is constant it neither have speed nor acceleration.But it has a power to attract things with the same pull which we say 9.8 m/s^2.
what u guys think of my post
light has both the nature of wave and particle, as according to de broglie he showed his work as folllowing
Einstein said e=mc^2 so this is particle nature
and max Planck said h=wc where w is wavelenght and c speed of light
=> c=h/w
and e=mc^2
=>...