Nathan and Tina are both wearing roller skates. They have been asked to demonstrate Physics concepts for their physical Science classmates. Use the information below to help you answer the question,
Nathan and Tina both push each other with the same amount of force. They push each other with a force of 144 Newtons. What is
Nathan's acceleration? (A = F/M)
O A. a = 0.28 m/s2
OB. a = 0.33 m/s?
O C. a = 3.6 m/s2
O D. a = 3 m/s2

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.