Respuesta :
Answer:
Initial velocity is zero.
Step-by-step explanation:
According to second equation of motion
  [tex]s=ut+\frac{1}{2} at^2[/tex]
where s = distance traveled Â
      t = time taken
     a = acceleration
     u = initial velocity
here in the question we have
   s = 10 m
   t = 1 second
  a = 20[tex]ms^{-2}[/tex]
plugging the known value in order to find the unknown which is u (initial velocity)
[tex]10=u(1)+\frac{1}{2} (20)(1)^2[/tex
10 = u +10
gives u =0
therefore initial velocity is zero.