1. The problem statement, all variables and given/known data Can the work done by the force of kinetic friction on an object ever be positive? If "yes" give and example. If "no", explain why not. I've said it can never be positive because the force of friction is always opposite in direction of the displacement the second question is Can the work done by the force of Earth's gravity on an object ever b e positive? If "yes" give and example. If "no", why not. I said yes because lets say somethig is free falling, the force of gravity is the same direction as the displacement. please correct my if i am wrong!!