Tabela 4: y(cm) x t2(s2)y (cm) t (s) t2 (s2)

0,0 0,0 0,05,0 1,0 1,020,0 2,0 4,045,0 3,0 9,080,0 4,0 16,0125,0 5,0 25,0180,0 6,0 36,0

Contas gráfico 4

Pontos

H (0 , 7)

I (10 , 42)

y=ax+b

tg α=a=y i− yh

x i−xh

= 42−710−0

=3510

=3,5

y=3,50 x+b

Utilizando o ponto H

7=3,50 . 0+b

b=7

y=3,50 x+7

Como

y = S(t)

b = S0

ax = at

Temos

a (t )=7+3,5t

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