555566667777888 (id: 42a730d54)

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[单选题]
A ball thrown horizonta5a)w: q2mome. mns,yllly from a point kq l v oqt3ann/bl866824 m above the ground, strikes the ground after traveling horizontally a distance of 18 m. With what 68 nq an3qv6 o/tlklb8speed was it thrown?

A. 6.51 m/s
B. 7.32 m/s
C. 8.13 m/s
D. 8.95 m/s


参考答案:  C


本题详细解析: 暂无