Newton Mechanics vs Special Relativity Problem

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SUMMARY

The discussion centers on comparing momentum calculations between Newtonian mechanics and special relativity for a bus moving at 0.99c. According to classical mechanics, momentum is calculated using the formula p = mv, while special relativity uses p = gamma*mv, where gamma is the Lorentz factor. The user calculated classical momentum as 99%cX and special momentum as 70.2%cX, indicating a significant difference in momentum values at relativistic speeds. The conversation highlights the necessity of using relativistic equations for accurate momentum assessments at high velocities.

PREREQUISITES
  • Understanding of Newtonian mechanics and its equations
  • Familiarity with special relativity concepts, particularly the Lorentz factor
  • Knowledge of momentum calculations in physics
  • Basic algebra skills for manipulating equations
NEXT STEPS
  • Study the derivation of the Lorentz factor (gamma) in special relativity
  • Explore the implications of relativistic momentum in high-speed scenarios
  • Learn about the differences between classical and relativistic physics
  • Investigate real-world applications of special relativity in modern physics
USEFUL FOR

Students and educators in physics, particularly those focusing on mechanics and relativity, as well as anyone interested in understanding the differences between classical and relativistic momentum calculations.

Kaleb
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Homework Statement


According to Newtonian mechanics the momentum of the bus in the preceding problem is p= mv. According to relativity, p = gamma*mv. How does the actual momentum of the bus moving at .99c compare with the momentum it would have if classical mechanics were valid?

*Note*
The previous problem only states a bus and has nothing to do with the question

Homework Equations


Classical
p = mv

Special
p=gamma*mv

The Attempt at a Solution


For classical I came up with 99%cX with x = mass
For special I came up with 70.2%cX with x = mass
 
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