It is enough not to exist the attrition force. d) A body alone remains in movement if to exist the attrition force acting on it. 02) Definitive data body in rest, we can affirm that: ) No force does not exist acting on this body. b) The addition of the forces that acts in the body is different of zero c) Only exists an only force acting on this body. d) The addition of the forces that acts in this body is zero.

03) One determined body is in free fall, disdaining the resistance of air. The force says which that acts on this body and the direction: ) Weight, vertical line for low b) Weight, vertical line for top c) Force of attrition, vertical line for top d) elastic, vertical Force for low 04) a personage of drawing livened up of the TV, known for He Man, says ‘ ‘ I have fora’ ‘. He designates the correct alternative regarding this phrase: ) This affirmation is correct, it says therefore it of the personage well was translated of the English. b) This affirmation is correct, because the force is resultant of the action of the Man. c) This affirmation is missed, therefore the Man does not have force and nor applies force, it he is resulted of the interaction between the bodies, and alone he appears while the bodies are interacting.

d) This affirmation is missed, therefore the force is the result of the interaction between the bodies, and alone it appears while the bodies are interacting. Then, He Man would have to say. ‘ ‘ I am capable To apply the great force of intensidade’ ‘. 05) He draws the forces that act in a rock when it is launched for top and when it is launched for low, considering the resistance of worthless air. Gratefulness: to the pupils of 1a year of the average education of the City of They are Gonalo of the Piau, to the professors who collaborate directly and indirectly so that this research was carried through in the Pertaining to school Unit Faustino Joo, to my Professor of the Federal University of the Piau, that was the person who orientates of this research. (Boniek Venceslou De a Cruz Hisses).