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bruteforce
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Homework Statement
We have two objects of mass m1. The first object is moving towards the second and has speed u. After they collide, they stick together and move as one mass with speed v.
Now what is the resulting mass and what is v?
Homework Equations
The Attempt at a Solution
I used that the energy is conserved and the equation E^{2}=(mc^{2})^{2}+(pc)^{2}
But I don't get the correct answer