Tabela 2
2
Tabela 2: a(cm/s 2 ) x t(s) v (cm/s 2 ) t (s) 5,0 15,0 11,0 25,0 15,0 35,0 19,0 45,0 25,0 55,0 31,5 65,0 35,0 75,0 38,5 85,0 45,0 95,0 50,0 105,0 Contas gráfico 2 Pontos C (34 , 14.4) D (78 , 36) y=ax +b tg α=a= y d −y c x d −x c = 36 −14.4 78− 34 = 21,6 44 =0,49 y=0,49 x +b Utilizando o ponto D 36= 0,49. 78 + b b=36−38,22 b=−2,22 y=0,49 x−2,22 6
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Transcript of Tabela 2
Tabela 2: a(cm/s2) x t(s)v (cm/s2) t (s)
5,0 15,011,0 25,015,0 35,019,0 45,025,0 55,031,5 65,035,0 75,038,5 85,045,0 95,050,0 105,0
Contas gráfico 2
Pontos
C (34 , 14.4)
D (78 , 36)
y=ax+b
tg α=a=yd− yc
xd−xc
=36−14.478−34
=21,644
=0,49
y=0,49 x+b
Utilizando o ponto D
36=0,49 .78+b b=36−38,22
b=−2,22
y=0,49 x−2,22
Como
y = a(t)
b = a0
ax = vt
Temos
6
a (t )=−2,22+0,49t
7