a. determine the height h of the building
b.what is the speed of the ball just before hitting on the building
c.find out the maximum height H reached above the ground.
更新1:
in horizontal, v=(30)(cos60)唔係不變GE咩?? 點解B又要搵
in horizontal, v=(30)(cos60)唔係不變GE咩?? 點解B又要搵
收錄日期: 2021-04-29 17:28:13
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080913000051KK00661