Two carts are involved in an elastic collision. Cart a with mass 0. 550 kg is moving towards cart b with mass 0. 550 kg, which is initially at rest. Cart a stops after the collision and cart b begins to move.

answer:

i havent taken the psat, but i have the sat, make sure to bring some snacks, because youre in there forever, 2 sharp number two pencils, an sat approved calculator, and maybe a jacket.   your phone and any books will be taken up, so don't try to bring them(but they will be given back at the end of the testing).   good luck!   i hope you do well!