[问答题]
Two inclines have the same atha++ v,qz*s height-e b0/zey xrubmvaf(+lt3 q.) but make different angles with the horizontal. The same steel ball is rolled down each incline. On which incline will the speed of the ball at the bottom be greater? Er)xb/leay+-f.e( vz b3 mq t0uxplain.