[填空题]
(a) If the human body couhv2 +fup1r6io lkq*w4as8l*s /tx g x/fd convert a candy bar directly into work, how high could an 82-kg man climb a ladder ** kxsqls8/a4gw tfx/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
