Mastering Physics Solutions Chapter 9 Linear Momentum And Collisions

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https://sites.google.com/site/aplustoppernotes/mastering-physics-solutions-chapter-9-linear-momentum-and-collisions

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http://aplustoppernotes.blogspot.com/2018/06/mastering-physics-solutions-chapter-9.html

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https://aplustoppernotes.wordpress.com/2018/06/05/mastering-physics-solutions-chapter-9-linear-momentum-and-collisions/

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Chapter 9 Linear Momentum And Collisions Q.1CQ

If you drop your keys, their momentum increases as they fall. Why is the momentum of the keys not conserved? Does this mean that the momentum of the universe increases as the keys fail? Explain.

Solution:

The momentum of the key is not conserved, because a net force acts on them. The momentum of the universe, however, is conserved because there are equal and opposite forces acting on Earth.

Mastering Physics Solutio...r Momentum And Collisions