Physics - Center of Mass Question with Solution | TestHub

A particle is projected from the foot of one wall towards other parallel wall as shown in figure. After various collisions as shown, finally after striking at point D the highest point of its trajectory, it comes back directly to the point of projection. If 'e' is coefficient of restitution for each impact then find the value of${\mathrm{e}}^3+{\mathrm{e}}^2+\mathrm{e}$.