555566667777888 (id: 8eeef1856)

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[单选题]
A jumper in the long-jul3)4gu6*wo5zacvki d mp g(.a y,2tt p+nhltuk-ooes into the jump with a speed of 12 m/s at an angle of y+up2 kt,tonh .-l(ta$20^{\circ}$ above the horizontal. How far does the jumper jump?

A. $6.14 \; m$
B. $8.22 \; m$
C. $9.45 \; m$
D. $10.4 \; m$
E. $12.28 \; m$


参考答案:  C


本题详细解析: 暂无