問題詳情

3,The 50-kg crate shown in Figure 3 rests on a horizontal plane for which the coefficient of kinetic friction is μk = 0.3, If the crate is subjected to a 400-N towing force as shown, determine the velocity of the crate in 3 seconds starting from rest. (20%)

參考答案

答案:C
難度:適中0.596026
統計:A(42),B(71),C(270),D(15),E(0)

用户評論

【用戶】xu4uap3

【年級】高三上

【評論內容】Ausubel意義學習論:認知結構:知識經驗在大腦中會形成一個階層,較抽象、涵蓋性的概念位於上層,較特殊具體的事例位於下層,學習時會將新訊息放入高層概念中,Ausubel主張學習的方向應由上而下。資料來源:陳嘉陽上冊P448