一小球从某一高处由静止开始自由下落,则小球在第3s末的速度为  

一小球从某一高处由静止开始自由下落,则小球在第3s末的速度为       m/s小球在第2s内的位移为      m。(g=10m/s2

答案

3015

相关题目

已知函数 ,方程有6个不同的实数解,则的取值范围是( 
已知函数 ,方程有6个不同的实数解,则的取值范围是(  ) A.           B.           C.          D.
Recently Peter________to do his homework, and instead insists on wasting his tim
Recently Peter________to do his homework, and instead insists on wasting his time playing com-puter games, which extremely annoys his father. A. had been refusing      B. has been refusing  C. w
 函数的最大值是   ▲   。
 函数的最大值是   ▲   。
He has left his book here on _____, so that you can read it.    A. purpose  
He has left his book here on _____, so that you can read it.    A. purpose    B. intention    C. aim    D. meaning
Koalas come from __________. They are very cute.A.AfricaB.ChinaC.JapanD.
Koalas come from __________. They are very cute.A.AfricaB.ChinaC.JapanD.Australia
用括号内所给单词的适当形式填空。 1. I don't dare ________(talk)
用括号内所给单词的适当形式填空。 1. I don't dare ________(talk) in front of class. 2. You should try to get over your ________(shy). 3. India is an ________(Asia)country. It is on t
从洋务运动的实践看,洋务派没有把下列哪一项列为“夷”
从洋务运动的实践看,洋务派没有把下列哪一项列为“夷”之“长技”() A.军事技术      B.机器生产      C.科技教育       D.议会制度
如图,在Rt△ABC中,∠C=90°,点D是AB边上的一定点,点E是AC上的
如图,在Rt△ABC中,∠C=90°,点D是AB边上的一定点,点E是AC上的一个动点,若再增加一个条件就能使△ADE与△ABC相似,则这个条件可以是________________________.

最新题目