ATIVIDADE AVALIATIVA - PRIMEIRO ANO
Autor: josejanuario.bolgspot.com | Publicado: 2017-06-22T13:17:00-07:00


 

  
  


ESCOLA ESTADUAL GRAMONT ALVES GONTIJO


  
 

  
  
ATIVIDADE AVALIATIVA DE FÍSICA – PRIMEIRO ANO

 

  
  
NOME:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  PROFESSOR: JANUÁRIO

 

  
  
TURMA:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;DATA:____/_____/2017

 




<!--[if !supportLists]-->1)&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->Um automóvel
percorre uma estrada com função horária&nbsp; S&nbsp; = - 80 + 40t, onde&nbsp; S é dado em km e t em horas.&nbsp; O automóvel&nbsp;&nbsp;
passa pelo km zero após:

<!--[if !supportLists]-->a)&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->1,0h&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b )&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
1,5h.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; c )&nbsp;&nbsp;&nbsp;&nbsp; 0,5h.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; d)&nbsp;&nbsp; 2,0h.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; e)&nbsp;&nbsp;&nbsp;
2,5h

<!--[if !supportLists]-->2)&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->Um carro desloca-se em uma trajetória
retilínea descrita pela função S = 40 +
5t &nbsp;(no SI). Determine:

(a) a posição inicial;

(b) a velocidade;

(c) a posição no instante 4s;

(d) o espaço percorrido após 8s;

(e) o instante em que o carro passa pela posição 80m;

(f) o instante em que o carro passa pela posição 20m.

<!--[if !supportLists]-->3)&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->Uma partícula descreve um movimento retilíneo uniforme,
segundo um referencial inercial. A equação horária da posição, com dados no SI,
é &nbsp;&nbsp;S = -10 + &nbsp;5t. Neste caso podemos afirmar que a
velocidade escalar e o movimento da partícula : 

a)
- 5m/s e o movimento é retrógrado. 

b)
- 5m/s e o movimento é progressivo.

&nbsp;c) 10m/s e o movimento é progressivo .

d)
10m/s e o movimento é retrógrado.

&nbsp;e) - 2m/s e o movimento é retrógrado.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4)&nbsp;&nbsp;&nbsp;&nbsp; Dois ciclistas que movem-se com velocidade
constante possuem&nbsp; funções horárias s1
= 20 + 2t e &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;S2&nbsp;= -40 + 4t; em relação a um mesmo
referencial e com unidades do Sistema Internacional.&nbsp; Pode- &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; se afirmar que o instante de encontro
entre eles é:&nbsp; &nbsp; &nbsp;&nbsp;

&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; a) 30 s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b) 40 s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; c) 50 s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; d) 60 s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; e) 70 s

&nbsp;&nbsp;&nbsp;&nbsp; 5)&nbsp; &nbsp; &nbsp;Dada a função
horária do espaço de um corpo em movimento uniforme:
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;S = 8 – 4t&nbsp; ( SI) . &nbsp;&nbsp;Determine:

&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; a) o espaço inicial e a velocidade
escalar do movimento
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; b) o espaço do móvel no
instante t = 2 s
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; c) o&nbsp; instante&nbsp; em que o móvel passa pela origem dos espaços
&nbsp; &nbsp; &nbsp; 6)&nbsp;&nbsp;&nbsp;&nbsp;Um automóvel percorre uma estrada com função horária
s= - 50+25t, onde s é dado em km e t em &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;horas. O automóvel passa pelo km zero
após:

<!--[if !supportLists]-->&nbsp; &nbsp; &nbsp; &nbsp;a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->1,0h&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b)&nbsp;&nbsp;
1,5h.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; c)&nbsp;&nbsp; 5h.&nbsp;&nbsp; &nbsp;d)2,0h.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
e)&nbsp;&nbsp; 2,5h.



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DIVIRTAM- SE!!!

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GÊ!!!