問題詳情
1.Dagwood and Blondie are driving two identical cars. Blondie is passing Dagwood at twice his speed.They apply their brakes with equal constant force and stop on the level road. Dagwood travels adistance D in a time T while braking. How long does Blondie take to stop?
(A)T
(B)1.4T
(C)2T
(D)2.8T
(E)4T.
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增
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由衝量P=mv=FtDagwood P=mv=FT