555566667777888 (id: 8eeef1856)

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[单选题]
A jumper in the long-u2 8kf*eztp2 gjumpg743i c (j*a(sas j-b .ozwqg.p7wzzl goes into the jump with a speed of 12 m/s at an angle .cs g7z.* z wa4 gbp7ojaj s(q3lwz(i-of $20^{\circ}$ 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