Mammals (Mammalia) are a class of vertebrate homeothermic amniotes (of "warm blood") that possess milk-producing mammary glands with which they feed the young. Most are viviparous (with the notable exception of the monotrematas: platypus and echidnas). A clear example of a mammal is man and his best friend, the dog.
This should not be included in the notes, because it is scientifically approved that mammals have the capacity to produce milk and give this food to their young, which is vital for humans or dogs as in the example
In physics, kinematics is the focal point of mechanics in which motion is caused without consideration of the unbalanced forces causing the said motions. There isn’t a deep explanation needed for this; it’s a simple concept. Through kinematics, algebra is used to determine momentum and motion within proximity of two or more objects. If you need help, let me know and I will gladly assist you.
C, he is trying to help the audience make a connection between his experiences and his ideas. Hope this helps! Happy Studying!