Sphere B, which is at suspended from the ceiling by a flexible string, is at rest when sphere A, which is moving horizontally at speed v, hits it as shown. If the two spheres are identical. & = 30, and the horizontal component of the velocity of B after the impact is vo/2, determine the coefficient of restitution e for the collision. Use sin(30) = 1 and cos(30) = 3"5. Neglect friction. 2