A ball of mass 0.200kg has a velocity of 150m/s: a ball of mass 0.300kg has a velocity of 0.4m/s. They meet in a head on elastic collision. A, find their velocity after the collision

Two models of the same compound are shown. in what way is model b better than model a? model b shows the types of elements in the compound, but model a does not. model b shows the three-dimensional shape of the molecule, but model a does not. model b shows how the atoms in the molecule are connected, but model a does not. model b shows the number of atoms of each element in the molecule, but model a does not