Why should momentum be conserved? 2 marksBecause energy can neither be created not destroyedBecause in an isolated system, there are no external forces Because we can calculate force easily Because momentum can be transferred
Question
Why should momentum be conserved? 2 marksBecause energy can neither be created not destroyedBecause in an isolated system, there are no external forces Because we can calculate force easily Because momentum can be transferred
Solution
Momentum should be conserved for the following reasons:
-
In an isolated system, there are no external forces: According to the law of conservation of momentum, the total momentum of an isolated system remains constant if no external forces act on it. This means that the total amount of momentum within the system at the beginning is the same as at the end.
-
Momentum can be transferred: In a collision, momentum can be transferred from one object to another, but the total momentum of the system remains constant. This is because the amount of momentum lost by one object is gained by the other. This principle is used in many areas of physics and engineering.
The other two points mentioned are not directly related to the conservation of momentum. Energy conservation is a separate principle, and the ease of calculating force does not explain why momentum should be conserved.
Similar Questions
Which of the following is a necessary condition for the total momentum of a system to be conserved?*Kinetic energy must not changeNo net force acts on the systemThe system must be at restOnly the force of gravity acts on the system
In an INELASTIC collision between two objectsGroup of answer choicesthe momentum of the system is conserved but the kinetic energy of the system is not conserved.the kinetic energy of each object is conserved.both the momentum and the kinetic energy of the system are conserved.the momentum of each object is conserved.the kinetic energy of the system is conserved, but the momentum of the system is not conserved.
The Law of the Conservation of _______________ states that energy cannot be created or destroyed.A PowerB EnergyC MatterD Momentum
The law of conservation of momentum states that if no forces act on a group of objects, their total does not change.
In a completely inelastic collision:Group of answer choicesBoth kinetic energy and momentum are conserved.The initial kinetic energy is all converted to heat.Momentum is conserved but kinetic energy is not conserved.Neither kinetic nor momentum is conserved.Kinetic energy is conserved but momentum is not conserved.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.