Blogtrottr
批踢踢實業坊 Examination 板
 
The Best Way to Manage your Money.

Start using Mint today to set a budget, track your goals and do more with your money.
From our sponsors
Re: [考題] 物理
Apr 16th 2014, 23:03, by Bernoulli

作者Bernoulli (零)

看板Examination

標題Re: [考題] 物理

時間Wed Apr 16 23:03:44 2014

路過解題 方法不一定最佳@@ 請參考 1. 畫v-t圖 算面積 假設總旅程為1 三段時間為t1 t2 t3 Vmax = at1 0.5at1^2 = 0.25 t2(at1) = 0.5 0.5a(t3)^2 = 0.25 可求得t1 t2 t3 帶入下式 平均速度V = 1/(t1+t2+t3) 即可求得Vmax和V之比例 2. 0.5(M/1000)v^2 = f(摩擦力)D-------(1) (M/1000)v = (M+3M/1000)v' (動量守恆) => v' = v/4 0.5(M/1000)v^2 = 0.5(4M/1000)(v^2/16)+fD'(待解之深度)---------(2) 子彈的動能轉換為合體木頭在光滑平面上移動的動能和射入磨擦力消耗的功 (1)(2)聯立即可求解 D' = 0.75D -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 140.113.123.206 ※ 文章網址: http://www.ptt.cc/bbs/Examination/M.1397660627.A.773.html ※ 編輯: Bernoulli (140.113.123.206), 04/16/2014 23:05:14

This entry passed through the Full-Text RSS service — if this is your content and you're reading it on someone else's site, please read the FAQ at fivefilters.org/content-only/faq.php#publishers.
You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
arrow
arrow
    全站熱搜

    yisoajkls 發表在 痞客邦 留言(0) 人氣()

    E-mail轉寄