Which best explains what happens to the motion of the pendulum due to the law of conservation of energy? The diagram showS a swinging pendulum O The mechanical energy transforms to thermal energy as the pendulum slows and eventually stops moving. OThe mechanical energy disappears as the pendulum slows and eventually stops moving. O The pendulum will continue moving at the same speed until someone stops it because energy cannot be destroyed. OThe pendulum will slow down but will never stop moving because energy cannot be destroyed​