[问答题]
Two inclines have th rlmuro( pa/91e same height b 3*w7f 16ibkuwwunh2.(tgac jut make different angles with the horizontal. The same steel ball is rolled down each incline1wfn(tu2g6waw u* 3 ihcj k7b.. On which incline will the speed of the ball at the bottom be greater? Explain.