(Solved): two answers for the following question A block starts at the bottom of a ramp and is given an init ...

two answers for the following question A block starts at the bottom of a ramp and is given an initial velocity up the ramp that has magnitude Phere is significant friction. between the block and the ramp. It eventually comes to a triamentary stop before sliding back down the ramp back to its starting position at which point it has a velocity that has a magnitude Which of the following statements about the block's motion are true? a) The total work done by friction on the block from start to finish is zero. the magnitude of v the magnitude of vi The total work done by gravity on the black from start to finish is zero The total mechanical energy of the block-Earth system remains constant d