Physics Algebra Cancelling Help

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SUMMARY

The discussion focuses on the algebraic manipulation of the escape velocity equation, Ve = sqrt(2(mu)/r), where mu represents the gravitational constant multiplied by the mass of the object. The user seeks guidance on cancelling terms in the equation Ve = sqrt(2(6.6742 x 10^-11 N m^2 / kg^2 (12.1kg))/0.106780959m). Key insights include the importance of maintaining consistent units throughout the calculation and the recommendation to solve algebraically before substituting numerical values. The approach of cancelling numbers is discouraged in favor of using units to guide the algebraic process.

PREREQUISITES
  • Understanding of escape velocity and its formula
  • Familiarity with gravitational constants and their units
  • Basic algebraic manipulation skills
  • Knowledge of unit consistency in physics equations
NEXT STEPS
  • Study the derivation of the escape velocity formula
  • Learn about dimensional analysis in physics
  • Explore algebraic techniques for isolating variables
  • Review examples of gravitational calculations involving different masses
USEFUL FOR

Students studying physics, particularly those tackling problems related to gravitational forces and escape velocity calculations, as well as educators seeking to clarify algebraic methods in physics contexts.

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Homework Statement


I need to know how to cancel terms in the equation Ve = sqrt 2(6.6742 x 10^-11 N m^2 / kg^2 (12.1kg))/0.106780959m


Homework Equations



Ve = sqrt 2(mu)/r

Where r is the distance from the denter of the object to be escaped from, and mu is the Gravitational Constant multiplied by the mass of the object to be escaped from.

The Attempt at a Solution



I really have no idea where to start...
 
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if u know what the end units are supposed to be, you can ignore units while solving the problem and just add the proper units to your final answer.

but if u do this, make sure all the units are consistent.
 
You cannot cancel numbers.

Solve your problem algebraically, until you have isolated the quantity you need. Then, finally, the LAST step you use the numbers given.

You will need to post a better problem statement to get help.

Edit:
The approach suggested by Pakmingki, is a bad one. You would be much better off to let the units guide your algebra.
 

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