a)
t=0 s=>x₀=1 m
v=Δx/Δt=(6-1)/(6-0)=5/6 m/s
x=x₀+vt=1+5/6t=1+5t/6
x(t)=1+5t/6
b)
t₀=0 s=>v₀=3 cm/s
t₁=1 s=>v₁=3 cm/s
a=Δv/Δt=(3-3)/(1-0)=0 cm/s²
x(t)=vo*t+at²/2=3t+0=3t=>x(t)=3t
c)t=0 ms=>x₀=-4 cm
v=Δx/Δt=(2+4)/6=6/6=1 cm/ms
x(t)=x₀+vt=-4+1t=>x(t)=-4+t
