You drop a ball from a height of 2.0 m , and it bounces back to a height of 1.5 m . What fraction of its initial energy is lost during the bounce? Express your answer using two significant figures. AEQ ? Elost / Einitial = Submit Request Answer V Part B What is the ball's speed just before the bounce? Express your answer to two significant figures and include the appropriate units. HA ? Ubefore= Value UnitsYou drop a ball from a height of 2.0 m , and it bounces back to a height of What is the ball's speed just after the bounce? 1.5 m. Express your answer to two significant figures and include the appropriate units. HA ? Vafter= Value Units Submit Request Answer Part D Where did the energy go? O The energy "lost" was changed primarily into thermal energy due to friction. O The energy "lost" was changed primarily into acoustic energy. O The energy "lost" was changed primarily into heat energy. O The energy "lost" was changed primarily into chemical energy