How Do I Solve the Momenergy Problem in Physics Homework?

Thread starter athrun200
Start date Sep 13, 2011

AI Thread Summary

The discussion revolves around solving a physics homework problem related to energy calculations. The user attempts to calculate kinetic energy using the formula E_k = Mv^2/2 and arrives at a value of 8.8E9 J. There is uncertainty about whether the calculations are correct, particularly regarding the conversion of mass from kilograms to milligrams. The user seeks assistance in verifying their solution. The thread highlights the importance of accurate unit conversions in physics problems.

Sep 13, 2011

athrun200

Homework Statement

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Homework Equations

The Attempt at a Solution

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I am not sure if I answer it correctly.
Can anyone help me to check?

Last edited by a moderator: Sep 13, 2011

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Sep 13, 2011

Spinnor

Gold Member

E_k = Mv^2/2 = 2*5E6*42^2/2 = 8.8E9J = mc^2

solve for little m which will be in kg so you must convert to milligrams.

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