- #1
shangriphysics
- 32
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I know that momentum is conserved when no "net" external forces such as Friction, Gravity, and air resistnace normal force; However, during inelastic collisions it says kinetic energy is not conserved because of external forces as well.
1. Are the external forces different for mechanical energy and conservation of momentum?
2. During inelastic collisions, KE is not conserved, therefore the velocity's will have values to make KEi not equal to KEf, How does momentum stay conserved if velocity is different for KineticInitial and Kineticfinal?
Maybe the momentum takes into account the velocity change from mechanical energy and also has different external forces and therefore momentum stays conserved despite mechanical energy not being conserved...
1. Are the external forces different for mechanical energy and conservation of momentum?
2. During inelastic collisions, KE is not conserved, therefore the velocity's will have values to make KEi not equal to KEf, How does momentum stay conserved if velocity is different for KineticInitial and Kineticfinal?
Maybe the momentum takes into account the velocity change from mechanical energy and also has different external forces and therefore momentum stays conserved despite mechanical energy not being conserved...