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]
09.20: A projectile 4 :9sf/ .vg6 upqwol7(uxxbwr launcheolimmz r72nv- sqh 1/s0k4c0 ed from the ground landed a horizontal distance of 120.0 m from its launch point. The projectile was in the air for a time of 4.00 seconds. If the projectile landed at the same vertical position from which it w kv 07ois0 elmn1rqh /m-c2sz4as launched, what was the launch speed of the projectile? Ignore air resistance.
A. 22.4 m/s
B. 30.0 m/s
C. 36.1 m/s
D. 42.4 m/s
E. 50.0 m/s
参考答案: C
本题详细解析:
暂无
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