|Dec13-03, 08:22 PM||#1|
Collisions problem (How should I approach it)
I came across a problem on collisions on one of my professors old exams. The problem is:
The way I am trying to approach it is by applying the conservation of linear momentum and energy, but the problem is that I still get left with 3 unknowns.
Here is what I know:
Before the collision, only block A has kinetic energy.
After the collision, the K.E. of system is (1/2 K.E. initial). block A has -1/2MV^2 and block B has 1/2MV^2.
The final collision is what confuses me. Should I just work with K.E.i (only block A moving) with conservation of linear momentum?
Any help would be greatly appreciated. Thanks!
|Dec13-03, 08:58 PM||#2|
by cons of p,
where v_2f is reckoned as negative
By the energy conditions,
which gives two equations with two unknowns.
|Dec13-03, 09:51 PM||#3|
Thanks for the reply
StephenPrivitera. I am just wondering why you made m_2v_2f negative in the first equation?? Should it be the other way around?
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