Linear Momentum and Acceleration

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SUMMARY

In the discussion on linear momentum and acceleration, it is established that when acceleration is not equal to zero, linear momentum cannot remain constant. The relevant equations include kinetic energy (KE = (1/2)mv^2) and momentum (P = mv). Participants noted that speed can remain constant in scenarios such as centripetal acceleration, while kinetic energy can also be constant under specific conditions. The focus is on understanding vector quantities in relation to these concepts.

PREREQUISITES
  • Understanding of linear momentum (P = mv)
  • Knowledge of kinetic energy formula (KE = (1/2)mv^2)
  • Familiarity with acceleration concepts
  • Basic grasp of vector quantities in physics
NEXT STEPS
  • Explore the implications of centripetal acceleration on speed and momentum
  • Study the relationship between acceleration and kinetic energy in various systems
  • Investigate vector quantities and their impact on physical laws
  • Learn about conservation of momentum in different physical scenarios
USEFUL FOR

Students studying physics, educators teaching mechanics, and anyone interested in the principles of motion and forces.

XSethX
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Homework Statement


If acceleration is not equal to 0, then which of the following must not be able to stay constant?
I: Speed
II: Linear Momentum
III: Kinetic Energy

(Select any 1, 2, or all of the above, or all of the above)

Homework Equations


KE = (1/2)mv^2
P = mv

The Attempt at a Solution


I think that it's only II... I thought that speed can stay constant (for example centripetal acceleration) and kinetic energy by the same reason can stay constant...
 
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Your answer is correct.
 
Sounds good to me... the question is checking that you realize about vector quantities.
 

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