GlowScript 2.8 VPython
# Setting up the Position Graph
g1=graph(width=400, height=200,xtitle='time', ytitle='position')
xDots=gdots(color=color.green, graph=g1)

# Defining the Object
obj=sphere(pos=vector(-1,0,0),radius=0.1,color=color.red, make_trail=True)

# Setting initial conditions and step size, dt
t=0 
dt=0.05
x0=-1
v0=1.0


# This is main part - the loop
while t<2:
    rate(10)
    x=x0+v0*t
    obj.pos=vector(x,0,0)
    xDots.plot(t,x)
    t=t+dt