本题目来源于试卷: gc physics textbook chapter 3 problems，类别为 IB物理学
[问答题]
In archery, should the arrow be aimed directly at the tf)lk p1i1rgw 4arget? How should nh-h v/lqpev91c6qn 7f (0u yqyour angle of aim depend on the distance qh/eqvn 9v0y6 lp1nq-hu7c f(to the target?
参考答案:
The arrow should be aimed above the target, because gravity will deflect the arrow downward from a horizontal flight path. The angle of aim (above the horizontal) should increase as the distance from the target increases, because gravity will have more time to act in deflecting the arrow from a straight-line path. If we assume that the arrow when shot is at the same height as the target, then the range formula is applicable: $ R=v_{0}^{2} \sin 2 \theta_{0} / g \rightarrow \theta=\frac{1}{2} \sin ^{-1}\left(R g / v_{0}^{2}\right)$ . As the range and hence the argument of the inverse sine function increases, the angle increases.
本题详细解析:
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