Amyx is building a treehouse in his backyard. he notices that every time he strikes a nail with the hammer, the hammer bounces back just a little bit as the nail goes farther into the wood. this is because when the hammer strikes and exerts a force on a nail, the nail

B. exerts an equal and opposite force back on the hammer.

Explanation:

I got asked the same question in class before.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.