15. If you were using a vacuum on a carpet which of the following statements is true. If you used the same applied force which of the following statements are true a. It is easier to push the vacuum as there is less friction and less normal force b. It is easier to pull the vacuum as there is less friction and more normal force C. It is easier to push the vacuum as there is less friction and more normal force d. It is easier to pull the vacuum because there is less friction and less normal force