State the Law of conselvation of moment um ols the total linear mumentum of an isuled system remains contant so it is consoried. 2.a) In the context of momentum what is an isolated system? b) Why is it necessary to choase an isolated system When solung a momentum problem?

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Let's break down your questions regarding the law of conservation of momentum.

### 1. Law of Conservation of Momentum
The law of conservation of momentum states that the total linear momentum of an isolated system remains constant over time, provided that no external forces are acting on it. This means that the momentum before an event (like a collision) is equal to the momentum after the event.

### 2. a) What is an Isolated System?
An isolated system is a physical system that does not interact with its surroundings. In the context of momentum, this means that no external forces are acting on the system. The only forces that may be present are internal forces, which do not affect the total momentum of the system.

### 2. b) Why Choose an Isolated System When Solving a Momentum Problem?
Choosing an isolated system is crucial when solving momentum problems for the following reasons:

1. **Simplification**: In an isolated system, the effects of external forces can be ignored, simplifying the analysis. This allows us to focus solely on the interactions within the system.

2. **Conservation Principle**: The law of conservation of momentum can be applied directly. Since the total momentum is constant, we can set the total momentum before an event equal to the total momentum after the event, making calculations straightforward.

3. **Accuracy**: If external forces are present, they can alter the momentum of the system, leading to incorrect conclusions if one assumes conservation of momentum applies. By ensuring the system is isolated, we can accurately apply the conservation principle.

In summary, an isolated system is essential for applying the conservation of momentum effectively and accurately in problem-solving scenarios.
An **isolated system** is one where no external forces act on it, allowing the total momentum to remain constant. When solving momentum problems, choosing an isolated system is necessary because it lets us apply the conservation of momentum principle without external interference, making calculations simpler and more accurate.

State the Law of conselvation of moment um ols the total linear mumentum of an isuled system remains contant so it is consoried. 2.a) In the context of momentum what is an isolated system? b) Why is it necessary to choase an isolated system When solung a momentum problem?

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