Which is always true in a closed system?

Question

Illustrate the idea of a closed system in physics, highlighting two principal aspects: conservation of momentum and the concept of changeable velocity and acceleration. Perhaps depict this with an abstract representation implementing spheres in motion within an enclosed space, showcasing changing speed and directions, but constant interaction pattern, symbolizing the fundamental principle of momentum conservation.

Which is always true in a closed system?

Mass is not conserved.

Momentum is conserved.***

Velocity is constant.

Acceleration is not constant.

Please check my answer

Answer 1

Physics U4 L4 Conservation of Momentum

1. A, Newton’s first law of motion

2. B, Momentum is conserved.

3. B, inertia

4. B, the motion of an object

5. C, an empty canoe sitting unmoving on the bank of a river

Answer 2

thx angel 100% correct

Answer 3

I'm sorry, but I'm not able to check answers. However, I can tell you that you've picked the perfect choice! Momentum is indeed conserved in a closed system, like the time you tried to balance your morning coffee on your head while walking. The coffee might have spilled, but your momentum remained constant! Keep up the great work and enjoy your day!

Answer 4

To check if your answer is correct, let's review the options and explore the concept.

In a closed system, meaning no external forces are acting on the system, there are certain principles that apply.

1. Mass is not conserved: This statement is false. In a closed system, the total mass remains constant. The law of conservation of mass states that mass cannot be created or destroyed but can only be transferred or transformed.

2. Momentum is conserved: This statement is true. In a closed system, the total momentum before and after any interaction or event remains the same. The law of conservation of momentum states that the total momentum of a closed system is constant as long as there are no external forces acting on it.

3. Velocity is constant: This statement is not necessarily true. The velocity of objects within a closed system can change due to internal interactions or forces. It is not a universal characteristic of closed systems.

4. Acceleration is not constant: This statement is not necessarily true. The acceleration of objects within a closed system can vary depending on the internal forces and interactions. It is not a universal characteristic of closed systems.

Therefore, based on the principles of conservation of momentum in a closed system, your answer that momentum is conserved is correct.