棒球選手站在球場的投手丘上，水平投出球速 44m/s 的無自轉快速直球，已知投手丘到本壘板的距離為 18m，現在忽略空氣阻力，而且重力加速度為 10m/s2，那麼球在投出後多久，球會抵達本壘板上-58題庫

50.棒球選手站在球場的投手丘上，水平投出球速 44m/s 的無自轉快速直球，已知投手丘到本壘板的距離為 18m，現在忽略空氣阻力，而且重力加速度為 10m/s2，那麼球在投出後多久，球會抵達本壘板上空？
(A)0.21s
(B)0.31s
(C)0.41s
(D)0.51s

參考答案

無參考答案

內容推薦

We can't go to Julia's party ________ we're going away this weekend.(A) as(B) due
請選出翻譯正確的句子:雖然下著大雨，我父親堅持步行去上班。 (A) My father insisted on walking to his office despite the heavy r
請選出翻譯正確的句子:Edward非常的不小心以至於犯了不少錯。 (A) Edward was too careless to make quite a few mistakes.(B) Suc
請選出翻譯正確的句子:如果我現在有一百萬，我要去環遊世界。 (A) If I have a million dollars, I will travel around the world. (
請選出翻譯正確的句子:昨晚被那部電影嚇到之後，我沒辦法睡著。 (A) After I was scared by the movie last night, I couldn't fa
We have made every effort to help the earthquake victims.________we can do now is pray and stay
They've torn down the old buildings ________ reconstruct the whole neighborhood.(A) in orde
Betty's grandma is in her eighties now and ________ to be a little forgetful from time to t
Jim is afraid of making mistakes. ________this fear that prevents him from making progress.(A) W
________ working as a doctor, he also writes novels in his spare time.(A) Aside from (B) Except f

內容推薦