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# Change in Momentum Two System Object

APPH12-HE14XM

Two boxes are sliding toward each other on a friction-less table with initial conditions given in the image. The two boxes collide in an elastic collision.

What is the change in momentum of the system after the collision?

A

$140 kg*m/s$

B

$240 kg*m/s$

C

$340 kg*m/s$

D

$0 kg*m/s$