Grade 9 Test on Mechanics 20241217 (id: 081c68229)

[单选题]
In Fig. 2-1, what is the velooq ::lme/w p9wt,y/na city at t = 5.cx fq0q- y:*: -tafzon5 s?

A. 0
B. 10 m/s
C. 20 m/s
D. -40 m/s


参考答案:  D


本题详细解析: 暂无

微信扫一扫，分享更方便