What is the kinetic energy of a 72.0-kg sky diver falling at a terminal velocity of 79.0 m/s? show your work. round your answer to the thousands place and include the units with your answer? How would I write this in the GUESS method

data:

m= 72.0 kg

v= 79.0 m/s

Required:

Ke= ?

formula:

Ke= mv2

solution:

ke= 1/2 72 x (79)2

    =1/2 72x 6241

    = 1/2 449352

    = 224676

rounded    = 225

c. electrical charges of ionic bonds.

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.