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試卷名稱：111年 - 111 學士後醫學系招生考試：物理及化學#107629
年份：111年
科目：學士後◆化學
35. A block of mass 2 kg on a table is pushed by a force of 20 N directed with an angle of 30o
downward from the horizontal as shown in the figure. The kinetic frictional coefficient is 0.2.
What is the work done by the frictional force after traveling 10 m long? (Gravitational acceleration
g = 10 m/s2)
(AB) 10 J (AC) 30 J (AD) 40 J (AE) 50 J (BC) 60 J (BD)一律送分