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 e t5e): kfhoqlr qx2)o+d 0am.e(r2 qcmnvironment where 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 only for/1f tjycm0 ,wx4q+lv kce acting on the ball is weight and its magnitude is constant. Therefore, the resultant force should be constant during the motionxm0l/1qf jk4wv +tcy ,. The only graph that represents this situation is the graph in B.
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