gc textbook chapter 2 Kinematics in One Dimension (id: f6cbb78b6)

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 baseball is seen toukq :oo q-abfjcddo p 4pr)9+x0+g7-a pawba, +pr*y (sj6 ,wdlzhs r+:xss upward by a window 28 m above the street with a vertical speed of 13 m/s If the ball was +b rydwx :6a +hl*jwz,r( sps,thrown from the street,
(a) what was its initial speed,    m/s
(b) what altitude does it reach,    m
(c) when was it thrown,    s
(d) when does it reach the street again?    s

参考答案:
空格1: 27±2%  空格2: 37±2%  空格3: 1.4±2%  空格4: 4.1±2% 


本题详细解析:

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