Can somebody solve this equation for me and show the steps?

Jun 7th, 2015
Price: $5 USD

Question description

An object of mass m moving in a certain direction has a kinetic energy of 4.0 J. It hits a wall and comes back with half its original kinetic energy. If the speed of the object on return is 2.0 m/s, what is the mass of the object?

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(Top Tutor) MJChelsea
School: UC Berkeley

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