本题目来源于试卷: Physics Bowl by Topic 3: Kinematics - part II Uniformly Accelerated Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
04.38: A small point-like object is pulled downwards by g g :yc.v(jt9 co74 ua0f.lg8hd6hcsntravity (d n ghkq((9 /h26t wl3mrs zkkhqvm7d78;3lqebown the plane of the page) but is constrained to exactly follow each of the frictionless pathways shown. Rank these three paths from shortest to longest in terms of the amount of time (T) necessary for the object to be released from rest at k q(6mwv m3 /( t97nhb 7lkql3h2dq ;hrskge8z point A and travel to point B. Assume that in changing direction that there is no loss of energy and that it takes negligible time.
A. T3 < T1 < T2
B. T3 = T2 < T1
C. T3 < T2 < T1
D. T1 < T2 = T3
E. T1 < T3 < T2
参考答案: E
本题详细解析:
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