Riley pushes a 60 kg box up a 10m long slope that elevates the box a vertical distance of 2 m. What is the AMA and the %efficiency of the slope if Riley actually pushes the box up the slope with 200 N of force? Group of answer choices AMA = 2; %eff = 40% AMA = 3; %eff = 40% AMA = 4; %eff = 40% AMA = 2; %eff = 80% AMA = 3; %eff = 70% AMA = 3; %eff = 80% AMA = 3; %eff = 60% AMA = 4; %eff = 60% AMA = 6; %eff = 60%