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