Physics Algebra Cancelling Help

AI Thread Summary
To solve the equation Ve = sqrt(2(mu)/r), it is crucial to maintain consistent units throughout the calculation. The gravitational constant and mass should be multiplied together to find mu, while r represents the distance from the center of the object. It is advised to solve the problem algebraically first, isolating the desired quantity before substituting numerical values. Cancelling numbers is not appropriate; instead, focus on unit consistency to guide the algebraic process. A clearer problem statement may help in receiving more effective assistance.
Thrawn
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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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