[填空题]
(a) If the human body coul1 dx nn).2ytetd convert a candy bar x3.h 6- 3n6tgeo 1o*olkj wcrbdirectly into work, how high could an 82-kg man cboknj316h .wrocx6 -et g3ol* limb a ladder if he were fueled by one bar (=1000kJ) m
(b) If the man then jumped off the ladder, what will be his speed when he reaches the bottom? m/s
