Kinematics vs. Energy Principle?

Question

Energy principle just makes more sense to solve physics problems. Why bother using long kinematic equations? I'm just wondering what the big difference is, and why classes don't just teach solving problems with energy principle as opposed to kinematics.

Answer 1

Kinematics allows you to ignore the factors affecting motion such as mass and force, whereas energy forces you to include these factors.

Answer 2

Principle deduced from the truth found in scientific inquiry should always have the day (i.e., the results of longitudinal case studies of women who have had abortions are quite unpleasant). And, of course, given scientific inquiry and results, if a child is conceived, than what right do we have determining to take this child's life, no matter what the cirumstances may be, whether for him or her, and his or her mother? And, yes, you are right. Your question is purely hypothetical. Because the popular idea "gays are born that way" is a myth, having its basis in pure propaganda, and not scientific inquiry at all. We already know from scientific research (Bailey and Pillard's identical twin studies from the 90's), genetic factors could only be predispositional (secondary influence to environmental) in nature, if at all a factor. Btw, these men of science are self-identified gays! So why do we see money and research hours being wasted for this wild goose chase of a search for a gay gene, or a composite two or three for that matter, and ignore the precedented and the obvious? These two studies PRECLUDE the whole idea of such being a reality. And, given this crystal clear information about the nature of sexual orientation, why are we still so ill-informed not only about scientific knowledge concerning same sex attractions, but also regarding human gender and sexuality in general, when we have made such great discoveries and advances in science otherwise? It seems to me it is because sociopolitical preferences (otherwise truly known as prejudice) in western culture are more important than the truth when it comes to these related human issues. Contrary to those who say these studies shouldn't have been done (and many do, and want these men removed from Northwestern University's staff, and their professional licenses revoked), ignoring the truth ALWAYS will do more harm than good concerning the welfare of humanity. For example, in the early 90's the government of France decided to not inquire about the rumor of their blood bank possibly being infected with HIV/AIDS, else it would create a fury and backlash for those in authority who would be investigating the matter. They only found it to be true after literally thousands of French folks got infected and died. And, yes, there was a fury and backlash all right as a result of not being principle-minded enough to take these precautions seriously and take preventative measures, no matter what inconveniences will likely occur! Btw, we also know that gays can, and do, experience change as well (Spitzer, 2002; Jones and Yarhouse, 2007). I can guarantee you'll never hear about these studies in an objective manner from the mass media, if at all. Btw, Spitzer was a past president of the APA, and was the principle authority in 1973 having homosexuality removed from the DSM! So who's prejudiced, and who's principled?

Answer 3

the person atop me is correct, further due to other sources energy is lost and turned into complex energies that are different such as thermal, electrical,ect. and it gets complex