-- server script (ServerScriptService) 

while true do

    local part = Instance.new("Part")

    part.Parent = game.Workspace

    part.Position = Vector3.new(0, 50, 0)

    part.Size = Vector3.new(5, 5, 5)

    part.BrickColor = BrickColor.Random()

​

    local bodyVelocity = Instance.new("BodyVelocity")

    bodyVelocity.Parent = part

    bodyVelocity.Velocity = Vector3.new(math.random(-100, 100), math.random(50, 100), math.random(-100, 100))

​

    wait(1)

end