4. The value of the before and after-collision momentum of two colliding objects is shown in the
diagram below. The direction of the momentum is indicated by the arrow.
Before Collision
After Collision
В
B
p = 18 kg•m's
p=22 kg•m/s
p = 26 kg•m's p = 14 kg•m/s
What is the momentum change of object A?
a. O kg•m/s
b. +8 kg•m/s
C. -8 kg•m/s
d. +40 kg•m/s