推 gieks:你寫as shown~那圖咧?? 140.112.240.133 11/02
推 pseudonymx:as shown?圖在哪？ 140.112.240.136 11/02
A solid, uniform ball rolls without slipping up a hill, as shown.At the top of
the hill, it is moving horizontally, and then it goes over the vertical cliff.
a.)How far from the foot of the cliff does the ball land and how fast is it
moving just before it lands?
b.)Notice that when the balls lands, it has a alrger translational speed than
when it was at the bottom of the hill. Does this mean that the ball somehow
gained energy? Explain!
哪一位強者可以回答啊
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 220.136.172.115