Two New Sciences motion and a naturally accelerated vertical motion which produces a parabolic curve. Two motions at right angles can be calculated using the sum of the squares. He shows in detail how to construct the parabolas in various situations and gives tables for altitude and range depending on the projected angle. [274] Air resistance shows itself in two ways: by affecting less dense bodies more and by offering greater resistance to faster bodies. A lead ball will fall slightly faster than an oak ball, but the difference with a stone ball is negligible. However the speed does not go on increasing
Letter of Forty-Two letter entitled "An appeal of the democratic public of Moscow to the President of Russia B. N. Yeltsin" ("Обращение собрания демократической общественности Москвы к президенту России Б.Н. Ельцину") was published on 8 October 1993, echoing key demands of the Letter of Forty-Two. Letter of Forty-Two The Letter of Forty-Two () was an open letter signed by forty-two Russian literati, aimed at Russian society, the president and government, in reaction to the events of September – October 1993. It was published in the newspaper "Izvestia" on 5 October 1993 under the title "Writers demand decisive actions of the government." The letter