paper 3 2001

881 181 turn

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Unformatted text preview: ............................................. ......................................................................... 881-181 Turn over – 18 – N01/430/S(3) OPTION E — HISTORICAL PHYSICS E1. Aristotle’s and Galileo’s theories of motion provide different ways of explaining some everyday observations. The different theories sometimes make different predictions. In the following situations, outline how Aristotle’s and Galileo’s theories of motion would be applied in order to answer the question. (a) Why does a stone fall to the ground if released, whereas smoke rises up in the air? [3] Aristotle ......................................................................... ......................................................................... ......................................................................... ......................................................................... Galileo ......................................................................... ......................................................................... ......................................................................... ......................................................................... (b) What would happen if a 10 kg object and a 100 kg object were dropped from the same height above the ground at the same time? [2] Aristotle ......................................................................... ......................................................................... ......................................................................... Galileo ......................................................................... ......................................................................... ......................................................................... (This question continues on the following page) 881-181 – 19 – N01/430/S(3) (Question E1 continued) (c) What are the forces that act on a cannon ball after the cannon has been fired and the cannon ball is moving through the air? [2] Aristotle ......................................................................... ......................................................................... ......................................................................... Galileo ......................................................................... ......................................................................... ......................................................................... 881-181 Turn over – 20 – N01/430/S(3) E2. Different models of the Universe have been able to explain the observed motions of the Sun, stars and planets. The diagram below represents, part of a simple Geocentric model as proposed by Ptolemy. Mars Sun Earth (a) Show on the diagram the position of Venus and the stars according to this model. [3] ......................................................................... ......................................................................... (b) The planet Mars is observed to show retrograde motion. Explain, with the aid of the above diagram, how Ptolemy accounted for this retrograde motion. ......................................................................... ......................................................................... ......................................................................... ..............
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This note was uploaded on 09/30/2011 for the course CHEM 102 taught by Professor Tina during the Spring '11 term at Global.

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