gc textbook chapter 2 Kinematics in One Dimension (id: 3f617891a)

本题目来源于试卷: gc textbook chapter 2 Kinematics in One Dimension，类别为 IB物理学

[填空题]
A stone is dropped from the q1d m5lgfw.(: p oqpx1roof of a building; 2.00 s after thatnb 6fsvv0.n:l 7mxb1yn8gt* aw 73yz w, a second stone is thrown straight dow7nvt wyl. 10smna*n6gw7zbf:yvb 83x n with an initial speed of 25.0 m/s and the two stones land at the same time.
(a) How long did it take the first stone to reach the ground? $t_1$ =    s
(b) How high is the building?    m
(c) What are the speeds of the two stones just before they hit the ground? #1    m/s #2    m/s

参考答案:
空格1: 5.63±2%  空格2: 155±2%  空格3: 55.2±2%  空格4: 60.6±2% 


本题详细解析:

微信扫一扫，分享更方便