State Newton's law of cooling.

Newton 's Law of Cooling : According to Newton 's law of cooling the rate of cooling is directly proportional to the temperature difference of body and its surrounding .If body cools from theta_(1) "to" theta_(2) in t seconds then (ms(theta_(1) -theta_(2))/(t)=alpha[(theta_(1)+theta_(2))/(t)- theta_(0)] . Where theta_(0) is the temperature of the surrounding . Is the statement true?

What is the basic condition for Newton's law of cooling to be obeyed?

Newton's law of cooling is a special case of :

For swimming, we use Newton's ___ law of motion.