A 64-kg woman stands on frictionless level ice with a 0.10-kg stone at her feet. She kicks the stone with her foot so that she acquires a velocity of 0.0017 m/s in the forward direction. The velocity acquired by the stone is: 0.0017 m/s backward 0.0017 m/s forward 1.1 m/s backward 1.1 m/s forward none of these