APFIVE Net External Impulse on a System
A 200 g cart moving at 0.5 m/s collides with a 300 g cart moving in the opposite direction at 0.2 m/s. After the collision, the 200 g cart moves at 0.3 m/s in its original direction. What external force must have acted during the collision?
A
A force that produced a 0.08 N·s impulse
B
A force that produced a 0.04 N·s impulse
C
A force that produced a 0.16 N·s impulse
D
No external force; momentum was conserved
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