code: def test_auto_point_acc_zero_vel():
      N = ReferenceFrame("N")
      O = Point("O")
      O.set_vel(N, 0)
      assert O.acc(N) == 0 * N.x
  
imports: from sympy.physics.vector import dynamicsymbols, Point, ReferenceFrame
  from sympy.testing.pytest import raises, ignore_warnings
  import warnings
label_desc: Use image node_id 20 for calling a global function with example usage: test_auto_point_acc_zero_vel() without return types