Grade 9 Test on Mechanics 20241217 (id: 0f9c6877b)

[填空题]
A ball is thrown straight up with a speed of 30 l2gn xyi2y,8xm/s. (only fill i0+og cnsc;(2v ;puhgcyp(cwgc f/9*t n numerical value in the blankg ho*cn+gys 9/wc2;c 0vufc(p(;tgcp s)
(a.) How long does it take the ball to reach the maximum height?    $s$
(b.) What is the maximum height reached by the ball?    $m$
(c.) What is its speed after 4.2 s?    $m/s$

参考答案:
空格1: 3.1±5%  空格2: 46±5%  空格3: 11±5% 


本题详细解析: 暂无

微信扫一扫，分享更方便