En un juego de billar una bola de 500g se mueve con velocidad de 2 m/s chocando con la mesa y devolviendose con una velocidad igual.
si el movimiento inicial se dio hacia la izquierda y el choque se prolonge en sentido contrario. calcule:
movimiento antes y después del choque y el impulso por la bola

Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?