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 launched from the ground landed a horizontal distance op4.ezxq 3ke+5: icd;lx d u/ydf zg-p+(d mseh 8.ltb)i 120.0 m from its launch point. The projectile was in theim) 8etgl- p(.h bdzs+ air for a time of 4.00 seconds. If the projectile landed at the same vertical position from which it was 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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