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 environment wher (jn9pn mvj-gnwm7(v7e 8i8kspr d- :ae air resistance 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 onamub .+th7j-k lau p17,lz zks ,2m3mily force acting on the ball is weight and its magnitude is constant. Therefore, the resultant force should be constant during the motion. The only graph that represents this situation is the graph, kas m ul 27,mzzphum+bl j-a.3kit17 in B.
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