Question For the problem where the block started from rest at a height of 2 m and slid down a frictionless incline, which of the following statements is true, select all that apply: There were no non-conservative forces acting on the block There was no net work done on the block by non-conservative forces The mechanical energy of the block was conserved (Ef = Ei) Question For the problem where the ball was attached to a long 2 m rope and released from rest, which of the following statements is true, select all that apply: There was no net work done on the ball by non-conservative forces The mechanical energy of the ball was conserved (Ef = Ei) There were no non-conservative forces acting on the ball

Question For the problem where the block started from rest at a height of 2 m and slid down a frictionless incline, which of the following statements is true, select all that apply: There were no non-conservative forces acting on the block There was no net work done on the block by non-conservative forces The mechanical energy of the block was conserved (Ef = Ei) Question For the problem where the ball was attached to a long 2 m rope and released from rest, which of the following statements is true, select all that apply: There was no net work done on the ball by non-conservative forces The mechanical energy of the ball was conserved (Ef = Ei) There were no non-conservative forces acting on the ball