qw098

zyzzbrah
5+ Year Member
Oct 23, 2011
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Medical Student
Hi,

I am having trouble with this conceptual Momentum question. It is a question on EK 1001 Physics. The answer is c) but I am unsure why. The diagram below is the question:



I would greatly appreciate your guys' help on this question. Thanks!
 
OP
qw098

qw098

zyzzbrah
5+ Year Member
Oct 23, 2011
440
198
Status
Medical Student
Is the Physics MCAT THAT hard?
 

sotto voce

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Thanks for that link.

Using the equation on the right, the denominator will be essentially just m1, because we're greatly increasing the size of m1 and therefore m2 becomes relatively small and insignificant. You're left with 2*m1 / m1, which equals 2. So the answer is 2*v.
 
OP
qw098

qw098

zyzzbrah
5+ Year Member
Oct 23, 2011
440
198
Status
Medical Student
Try figuring that out in less than one minute when you are super stressed :(