Sadržaj • Sila • Položaj • Brzina • Ubrzanje Description Explore forces and motion as you push household objects up and down a ramp. Lower and raise the ramp to see how the angle of inclination affects the parallel forces. Graphs show forces, energy and work. Primjeri obrazovnih ciljeva • Predict, qualitatively, how an external force will affect the speed and direction of an object's motion.

• Explain the effects with the help of a free body diagram. Starcraft brood war races. • Use free body diagrams to draw position, velocity, acceleration and force graphs and vice versa. • Explain how the graphs relate to one another.

• Given a scenario or a graph, sketch all four graphs.

Series of questions with right and wrong answers that intends to check knowledge. Explore forces and motion as you push household objects up and down a ramp. Lower and raise the ramp to see how the angle of inclination affects the parallel forces. Graphs show forces, energy and work.

In 1909, Berlin theology professor Adolf Harnack issued an appeal to Kaiser Wilhelm II. As a close adviser to the Kaiser, a member of the Academy of Sciences and director of the renowned Royal Library, Harnack was one of the most innovative and influential science managers of his time. His memorandum outlined a comprehensive reform of the science system.

It centred on Harnack’s call for Germany to establish independent research institutes to co-exist alongside the universities. He proposed that they should conduct specialized basic research, predominantly in the natural sciences, and explained that the rapid pace of industrialization since the mid-19th century had demonstrated that many new technical problems could only be solved with greater knowledge of chemical or physical principles. Advances were also being made in the fields of biology and medicine, he wrote.

Harnack’s memorandum paved the way for structures that still characterize the German science system to this day and facilitated specialized research and Big Science as we know them today. In the interests of implementing these structures, Harnack proposed the foundation of a brand new type of research association for the advancement of science: The Kaiser Wilhelm Society. Advancement of Science took place at the Berlin Academy of Arts on 11 January 1911. A total of 83 voting members of the new association attended the meeting. The list of founding members reads like an extract from the “Who’s Who” of German industry. The Kaiser had announced its foundation a few months prior, on Berlin University’s 100th anniversary. The new Society was to complement the work of the universities and academies with research into the natural sciences and thereby keep Germany competitive in the international arena.

Influential science manager and scientist Adolf Harnack was appointed President. The Kaiser himself was the patron, thus granting the new institution a great deal of prestige and attracting numerous powerful donors, including many members of the Jewish middle classes. Minerva was chosen as the Society’s symbol, the Roman goddess of science being the embodiment of wisdom, valour and endurance. The first of the KWS’s institutes were able to move into their own purpose-built accommodation in October 1912. The Institute for Chemistry with Director Ernst Beckmann and the Institute of Physical Chemistry and Electrochemistry with Director Fritz Haber were both inaugurated in Berlin.

They formed the core of the new research campus at Dahlem, which went on to grow rapidly: the Kaiser Wilhelm Institute for Experimental Therapy was opened as early as 1913, followed by the Institute for Biology in 1915. But the KWS was also active beyond the capital: In 1912, Jewish art collector Henriette Hertz bequeathed the KWS the Palazzo Zuccari in Rome, along with a significant library of books on the history of art and a substantial sum in the form of endowment capital. It was there that the KWS set up a research institute dedicated to the study of the history of art under the name Bibliotheca Hertziana.

As a result, the human sciences had a place within the KWS right from the start. Even though this had not been formulated as a key element in the Society’s original mission, many other institutes dedicated to the human sciences were to follow. Fritz Haber directed his Institute of Physical Chemistry and Electrochemistry in Berlin-Dahlem to focus fully on military research into war gas from the very first year of the war. The institute reported directly to the Supreme Army Command from 1916.

Haber himself became known as the father of gas warfare, which was to have a lasting impact on the Kaiser Wilhelm Institutes in Berlin, where the workforce amounted to as many as 1500 staff. The KWI for Chemistry was also involved in the work, and scientists at the KWI for Experimental Therapy were working on the refinement of vaccines to protect German soldiers against typhoid and cholera. Most of the KWIs endeavoured, however, to continue their pre-war work, especially the institutes outside Germany, though this proved difficult. Kaiser Wilhelm II abdicated in 1918, resulting in Germany getting a democratic constitution for the first time in its history. The KWS Senate decided in 1919, however, not to change to the Society’s name. During the Weimar Republic, Reichstag deputies, particularly members of Germany’s left-wing fractions, attempted repeatedly to have the name changed. Presidents Harnack and Planck managed to prevent the Society from being renamed until the late 1930s.