A 5kg mass moving at 15 m/s collides with a 2kg stationary(0 m/s) mass. After the collision, both the 5 kg and 2kg mass move off in the same
direction. If the 2 kg mass is moving at 25 m/s, what is the speed of the 5
kg mass? *

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