Physics - Center of Mass Question with Solution | TestHub

As shown, a big box of mass M is resting on a horizontal smooth floor. On the bottom of the box there is a small block of mass m . The block is given an initial speed ${\mathrm{v}}_0$ relative to the floor, and starts to bounce back and forth between the two walls of the box. Find the final speed of the box when the block has finally come to rest in the box relative to box.