本题目来源于试卷: Physics Bowl by Topic 4: Kinematics - part III Projectile Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
00.37: During a recent winter stor3 6o x9r/e:ju4goo;i fc f8pka0,1wll caggt1m,y;2xi.zgmzi j bdk)w/d)o5e8 ly d64i bales of hay had to be dropped from an airplane to a herd of cattle below. Assume the airplane flew horizontally at an altitude of 180 m with a constant velocity of 50 m/s and dropped one bail of hay every two seconds. It is reasonable to assume that air resistmgbdz)ii 46kdxd;y. ziwje/ l5 )o2y8ance will be negligible for this situation. As the bales are falling through the air, what will happen to their distance of separation?
A. the distance of separation will increase
B. the distance of separation will decrease
C. the distance of separation will remain constant
D. the distance of separation will depend on the mass of the bales
E. none of the above are always true
参考答案: A
本题详细解析:
暂无
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