本题目来源于试卷: Work Energy and Power，类别为 美国物理杯赛(Physics Bowl)
[单选题]
12.48: An object of mass M is droppe 3lz sysp,33red from aheight H acc7/kjl pxi2*0qn sx*7ab(wf bove the ground. The object bounces off of a horizontal surface in a collision lasting time T. The object then rises upward to a maximum height H/2. What was the magnitude of the average net force acting on the maskb*f0s xa p ccxj7*qlni w27/(s during the collision with the surface?
A. $(2-\sqrt{2})\frac{M\sqrt{gH}}{T}$
B. $(1+\frac{\sqrt{2}}{2})\frac{M\sqrt{gH}}{T}$
C. $\frac{M\sqrt{3gH}}{T}$
D. $(2\sqrt{2}-1)\frac{M\sqrt{3gH}}{T}$
E. $(1+\sqrt{2})\frac{M\sqrt{3gH}}{T}$
参考答案: E
本题详细解析:
暂无
| 
