<h2>Answer:</h2>
The correct option is Pf = Pi
<h2>Explanation:</h2>
Momentum is the product of velocity and mass of an object. It is a physical quantity and the law of conservation of momentum says that for a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision. So simply it means that Pf = Pi.
the control rods absorb extra neutrons keeping them from causing to many uranium atoms to split to quickly.
Thermal energy<span> is </span>energy<span> possessed by an </span>object<span> or system due to the movement of particles within the </span>object<span> or the system</span>
