lorielder2929 lorielder2929 22-03-2024 Physics contestada A 300-kg piano slides 4.0 m down a ramp inclined 25° above the horizontal. The coefficient of kinetic friction between the piano and the ramp is 0.1. A man pushes back on the piano with a force of...a) 80 Nb) 120 N c) 160 Nd) 200 N