A train is traveling down a straight track at 12 m/s when the engineer applies the brakes, resulting in an acceleration of -1.75 m/s2 as long as the train is in motion.

How far does the train move during a 40-s time interval starting at the instant the brakes are

applied?

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.