What is the momentum of a car with a mass of 1500 kg traveling north at a speed of 30 m/sec?

that's what i got you can count the number of atoms

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.