A-Level Edexcel Physics Particles and Radiation: Which row in the table describes

Which row in the table describes the speed and potential energy of a particle at point P on this path? | Speed at P | Potential energy at P | |------------|---------------------| | A | greatest | greatest | | B | greatest | least | | C | least | greatest | | D | least | least | - Edexcel - A-Level Physics - Question 8 - 2023 - Paper 1

Question 8

Which-row-in-the-table-describes-the-speed-and-potential-energy-of-a-particle-at-point-P-on-this-path?--|-Speed-at-P--|-Potential-energy-at-P-|-|------------|---------------------|-|-A----------|-greatest------------|-greatest------------|-|-B----------|-greatest------------|-least---------------|-|-C----------|-least---------------|-greatest------------|-|-D----------|-least---------------|-least---------------|-Edexcel-A-Level Physics-Question 8-2023-Paper 1.png

Which row in the table describes the speed and potential energy of a particle at point P on this path? | Speed at P | Potential energy at P | |------------|-------... show full transcript

Worked Solution & Example Answer:Which row in the table describes the speed and potential energy of a particle at point P on this path? | Speed at P | Potential energy at P | |------------|---------------------| | A | greatest | greatest | | B | greatest | least | | C | least | greatest | | D | least | least | - Edexcel - A-Level Physics - Question 8 - 2023 - Paper 1

Step 1

Identify the relationship between speed and potential energy

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Answer

In the context of mechanics, the speed of a particle is inversely related to its potential energy when the total energy is conserved. As potential energy increases, the speed decreases and vice versa.

Step 2

Evaluate the options in the table

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Answer

Considering the relationship established, we analyze each row:

Row A: Greatest speed and greatest potential energy - Not possible simultaneously.
Row B: Greatest speed and least potential energy - This can happen when the particle is close to the lowest point in a potential field.
Row C: Least speed and greatest potential energy - This is achievable when the particle is at a high potential point.
Row D: Least speed and least potential energy - This does not describe a valid scenario as a particle may still have speed.

Step 3

Conclusion

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Answer

The valid option based on the analysis is Row C, which states:

Speed at P: least
Potential energy at P: greatest This accurately describes a scenario where the particle is at a peak potential energy point.

Identify the relationship between speed and potential energy

Evaluate the options in the table

Conclusion

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