题型:名词解释 距沙坑高7m处,以v0=10m/s的初速度竖直向上抛出一个重力为5N的物体,物体落到沙坑并陷入沙坑0.4m深处停下。不计空气阻力,g=10m/s2。求:(1)物体上升到最高点时离抛出点的高度;(2)物体在沙坑中受到的平均阻力大小是多少? 查看答案
题型:名词解释 Mark Anthony''s eulogy of Caesar at his funeral is memorably recorded in a play by Shakespeare.A.prayerB.praiseC.biographyD.denunciation 查看答案