Object a has of mass 7. 20 kilograms, and object b has a mass of 5. 75 kilograms. The two objects move along a straight line toward each other with velocities +2. 00 meters/second and -1. 30 meters/second respectively. What is the total kinetic energy of the objects after the collision, if the collision is perfectly elastic?

answer: the mildest forms of push polling are designed merely to remind voters of a particular issue. for instance, a push poll might ask respondents to rank candidates based on their support of an issue in order to get voters thinking about that issue. many push polls are negative attacks on other candidates.

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!

answer:

low silica content, thick and fluid, forms dark colored rock

explanation: