本题目来源于试卷: Space Time & Motion A.1 Kinematics，类别为 IB物理学
[单选题]
A ball is projected in an env zx 4f9wt pv5z0ironment where air resis p 8p;hr3s p/tbufyx +w/cb )t,tance can be ignored
Which graph shows thevariation of the resultant force R acting on the ballwith the height h of the object?
A.
B.
C.
D.
参考答案: B
本题详细解析:
Due to the absence of air resistance, the only force acting on the wyim cf*v3ulbhn*m7 a2-f / ajht5r10 ball is weight and its magnitude is constant. Therefore, the resultant force should be constant during the motion. The only graph that *7byath1 *i vaj m 2wcff53/umhrl0-nrepresents this situation is the graph in B.
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