A box, initially at rest, slides down a rough ramp as shown from point A to B. Complete the bar charts for the block as the block moves from point A to B. Label the column heights. Set the zero point for the gravitational potential energy of the system at B. Initial system energy During Final system energy KE PE PE KE PE PE Bar chart key KE Kinetic energy Gravitational PE potential energy 0 PE Spring potential energy Work done by W au external forces Use g = 10 m/s? for simplicity Explain your reasoning