[填空题]
(I) How much work did the movermb5;*l nx3b zos do (horizontallk*4+yt1x9ozvdqcl dj.5p i9c y) pushing a 160-kg crate 10.3 m across a rough floor without acceleration, if the effective coefficient of friicpo.9vdl c91 y k*qdtxz5 j+4ction was 0.50? J
