Washington Comprehensive Assessment Of Science (WCAS) Grade 11 Practice Questions - Washington Comprehensive Assessment Of Science - Grade 11 Exam

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A 1,200-kg car traveling east at 15 m/s collides head-on with an identical 1,200-kg car traveling west at 15 m/s. The cars lock bumpers and come to a complete stop. What was the total vector momentum of the system right before the collision?

0 kg·m/s. 36,000 kg·m/s east. 18,000 kg·m/s west. 72,000 kg·m/s north.

Correct Answer:

0 kg·m/s.

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