[单选题]
A jumper in the long-jlk 9syz ;w:n2/ba 0tawump goes into the jump with a spcd+l)+c+h vomobd ++js7 h(ma vh*8jweed of 12 m/s at an angle of mvjo*s+7(8ahw)vh do+++ +bdj h lccm$20^{\circ}$ 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. $12.28 \; m$
Post time 2025-9-8 22:24:32